Molly Fish - Not enough oxygen?

letssetup · Aug 25, 2020

Hey,

I've noticed in the last couple of days that 1 of my Molly fish is always haveing it's head at top of the water.

From my research, it could be lack of oxygen? But surely all the fish's would be doing it?

My filter is for 100-200L tank and my tank is only 40L, so don't have an air stone because thought my filter would be enough.

AdoraBelle Dearheart · Aug 25, 2020

Looks as though the filter outlet is a good way below the water line? Try raising it a little so it's disturbing the surface more as the water comes out, it's this surface disturbance that allows for gas exchange and oxygenates the water.

Also double check the temp on the tank, as water becomes warmer it can hold less oxygen, so fish gulping at the surface always worth checking the temp and increasing the surface disturbance, then see how they're doing

Tez_20 · Aug 25, 2020

letssetup said:
My filter is for 100-200L tank and my tank is only 40L, so don't have an air stone because thought my filter would be enough.

I would do as @AdoraBelle Dearheart as stated as i've got 3 lots of water flow going in my tank and have found fish love it and my tank is at 78.5F

letssetup · Aug 25, 2020

AdoraBelle Dearheart said:
Looks as though the filter outlet is a good way below the water line? Try raising it a little so it's disturbing the surface more as the water comes out, it's this surface disturbance that allows for gas exchange and oxygenates the water.

Also double check the temp on the tank, as water becomes warmer it can hold less oxygen, so fish gulping at the surface always worth checking the temp and increasing the surface disturbance, then see how they're doing

Thank you,

I've done it so the top is above the water so it's like a founting, is this better?

Temp is stable at 25c

AdoraBelle Dearheart · Aug 25, 2020

Yep, hopefully that'll do the trick. If she's still doing it after a few hours, or showing other symptoms, then come back and see if there's something else going on perhaps? Everyone else in the tank okay?

Tez_20 · Aug 25, 2020

letssetup said:
Thank you,

I've done it so the top is above the water so it's like a founting, is this better?

View attachment 114144
View attachment 114146

Temp is stable at 25c

That's 77F roughly i would still think about getting extra oxygen such as an air stone to help to see if that helps.

letssetup · Aug 25, 2020

AdoraBelle Dearheart said:
Yep, hopefully that'll do the trick. If she's still doing it after a few hours, or showing other symptoms, then come back and see if there's something else going on perhaps? Everyone else in the tank okay?

The others are doing great.

@Tez_20 I'll get one orded.

Thanks people.

Btw @AdoraBelle Dearheart she is an he

Tez_20 · Aug 25, 2020

letssetup said:
The others are doing great.

@Tez_20 I'll get one orded.

Thanks people.

You only need something like this which i brought and you can turn the volume to what you want.

https://www.amazon.co.uk/dp/B07YJKS7YL/?tag=

letssetup · Aug 26, 2020

This morning I couldn't find my Male Molly fish anywhere, I have now found him hideing

what's wrong with him..

On last photo you can just about make out his tail under log

I can't see anything wrong with him and all the other fish are doing fine

AdoraBelle Dearheart · Aug 26, 2020

LOL sorry, the gold dust molly I have is a female, so yours automatically became 'she' in my head, I didn't even look whether it was male or female, sorry! :blush:

Hard to say what's going on without knowing more about the tank, how long has it been set up now? You had guppies before, didn't you?

If you can copy paste and fill out this template, hopefully we can figure out what's going on with him;

Tank size:
pH:
ammonia:
nitrite:
nitrate:
kH:
gH:
tank temp:

Fish Symptoms (include full description including lesion, color, location, fish behavior):

Volume and Frequency of water changes:

Chemical Additives or Media in your tank:

Tank inhabitants:

Recent additions to your tank (living or decoration):

Exposure to chemicals:

Digital photo (include if possible):

letssetup · Aug 26, 2020

Tank size: 40L
pH: 7.6
high range pH: 7.8
ammonia: 0.25
nitrite: 2.0
nitrate: 5.0
kH:
gH:
tank temp: 25c

Fish Symptoms (include full description including lesion, color, location, fish behavior):

Hiding under log sometimes but will eat and sometimes swim around normaly.

Volume and Frequency of water changes:

Normally one a week.

Chemical Additives or Media in your tank:

Seachem Prime
Seachem Stability

Tank inhabitants:

3 X Guppies
6 X Pearl 'Danio'
3 X Tuxedo Molly's
2 X Zebra Neurite Snails

Recent additions to your tank (living or decoration):

3x Tuxedo Mollys.
Christmas's weed but went wrong so removed it.

Exposure to chemicals: N/A

Digital photo (include if possible):

Ammonia:

PH:

High Range PH

NO2:

NO3:

Sorry for slow reply, had an appointment to attend.

When I open the lid, he'll come up for food and swim around awhile.

letssetup · Aug 26, 2020

GH / KH

��

Hardness French
Hardness German
Hardness Clark
Hardness Level
Hardness Results
For most analysis, results are from samples taken at random in the water quality zone of your area. In some cases, results are from samples taken from water treatment supply points feeding the zone.
Value	Moderately Hard
Standard	No standard applies
UK/EU Limit
Value	11.57
Standard	No standard applies
UK/EU Limit	Degrees Clark
Value	9.26
Standard	No standard applies
UK/EU Limit	German Degrees
Value	16.54
Standard	No standard applies
UK/EU Limit	French Degrees

��

Turbidity
Total Trihalomethanes
Total Pesticides
Total Organic Carbon
Tetrachloromethane
Tetrachloroethene and Trichloroethene
Taste
Sulphate
Sodium
Selenium
pH
Pesticides Other
PAH
Odour
Nitrite - Nitrate Calculated
Nitrite
Nitrate
Nickel
Mercury
Manganese
Lead
Iron
Heptachlor epoxide
Heptachlor
Free Chlorine
Fluoride
Enterococci
E. coli
Dieldrin
Cyanide
Copper
Conductivity
Colour
Colony Count After 72 Hours at 22ºC
Coliform Bacteria
Clostridium perfringens
Chromium
Chloride
Cadmium
Bromate
Boron
Benzo-3,4-Pyrene
Benzene
Arsenic
Antimony
Ammonium
Aluminium
Aldrin
1,2-Dichloroethane
Water Quality Summary Report
Data is for period 01-April-2019 to 31-March-2020
For most analysis, results are from samples taken at random in the water quality zone of your area. In some cases, results are from samples taken from water treatment supply points feeding the zone.
Average	<0.14
Maximum	<0.30
Minimum	<0.09
UK/EU Limit	3
Units	µg/l
Number of Results	43
Samples above PCV Limit	0
Average	<0.001
Maximum	<0.003
Minimum	<0.001
UK/EU Limit	0.03
Units	µg/l
Number of Results	36
Samples above PCV Limit	0
Average	<9
Maximum	22
Minimum	<5
UK/EU Limit	200
Units	µg/l
Number of Results	23
Samples above PCV Limit	0
Average	<0.027
Maximum	<0.064
Minimum	<0.015
UK/EU Limit	0.5
Units	mg/l
Number of Results	23
Samples above PCV Limit	0
Average	0.29
Maximum	0.59
Minimum	0.06
UK/EU Limit	5
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	<0.11
Maximum	0.15
Minimum	<0.09
UK/EU Limit	10
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	<0.06
Maximum	<0.12
Minimum	<0.04
UK/EU Limit	1
Units	µg/l
Number of Results	43
Samples above PCV Limit	0
Average	<0.001
Maximum	<0.001
Minimum	<0.001
UK/EU Limit	0.01
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	<0.023
Maximum	0.043
Minimum	<0.012
UK/EU Limit	1
Units	mg/l
Number of Results	44
Samples above PCV Limit	0
Average	0.93
Maximum	1.44
Minimum	0.61
UK/EU Limit	10
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	0.18
Maximum	0.41
Minimum	0.09
UK/EU Limit	5
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	22.09
Maximum	73.10
Minimum	9.40
UK/EU Limit	250
Units	mg/l
Number of Results	44
Samples above PCV Limit	0
Average	<0.2
Maximum	0.3
Minimum	<0.2
UK/EU Limit	50
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	0
Maximum	0
Minimum	0
UK/EU Limit	0
Units	No. / 100ml
Number of Results	23
Samples above PCV Limit	0
Average	0
Maximum	0
Minimum	0
UK/EU Limit	0
Units	No. / 100ml
Number of Results	56
Samples above PCV Limit	0
Average	0
Maximum	5
Minimum	0
UK/EU Limit	No abnormal change
Units	No. / 100ml
Number of Results	23
Samples above PCV Limit	0
Average	<1.17
Maximum	2.20
Minimum	<0.44
UK/EU Limit	20
Units	mg/l Pt/Co
Number of Results	23
Samples above PCV Limit	0
Average	420
Maximum	626
Minimum	222
UK/EU Limit	2500
Units	µS/cm at 20ºC
Number of Results	23
Samples above PCV Limit	0
Average	0.0370
Maximum	0.1328
Minimum	0.0033
UK/EU Limit	2
Units	mg/l
Number of Results	8
Samples above PCV Limit	0
Average	<2
Maximum	<4
Minimum	<2
UK/EU Limit	50
Units	µg/l
Number of Results	43
Samples above PCV Limit	0
Average	<0.004
Maximum	<0.008
Minimum	<0.003
UK/EU Limit	0.03
Units	µg/l
Number of Results	36
Samples above PCV Limit	0
Average	0
Maximum	0
Minimum	0
UK/EU Limit	0
Units	No. / 100ml
Number of Results	56
Samples above PCV Limit	0
Average	0
Maximum	0
Minimum	0
UK/EU Limit	0
Units	No. / 100ml
Number of Results	8
Samples above PCV Limit	0
Average	0.32
Maximum	0.43
Minimum	0.19
UK/EU Limit	1.5
Units	mg/l
Number of Results	8
Samples above PCV Limit	0
Average	0.35
Maximum	0.60
Minimum	0.14
UK/EU Limit	No abnormal change
Units	mg/l
Number of Results	56
Samples above PCV Limit	0
Average	<0.001
Maximum	<0.003
Minimum	<0.001
UK/EU Limit	0.03
Units	µg/l
Number of Results	36
Samples above PCV Limit	0
Average	0.000
Maximum	0.000
Minimum	0.000
UK/EU Limit	0.03
Units	µg/l
Number of Results	36
Samples above PCV Limit	0
Average	<13
Maximum	39
Minimum	<3
UK/EU Limit	200
Units	µg/l
Number of Results	23
Samples above PCV Limit	0
Average	<2.4
Maximum	9.2
Minimum	<0.3
UK/EU Limit	10
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	<1.0
Maximum	3.0
Minimum	<0.2
UK/EU Limit	50
Units	µg/l
Number of Results	23
Samples above PCV Limit	0
Average	<0.008
Maximum	0.024
Minimum	<0.005
UK/EU Limit	1
Units	µg/l
Number of Results	44
Samples above PCV Limit	0
Average	3.5
Maximum	4.8
Minimum	2.0
UK/EU Limit	20
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	11.44
Maximum	15.69
Minimum	6.00
UK/EU Limit	50
Units	mg/l
Number of Results	8
Samples above PCV Limit	0
Average	<0.005
Maximum	<0.006
Minimum	<0.003
UK/EU Limit	0.5
Units	mg/l
Number of Results	8
Samples above PCV Limit	0
Average	0.23
Maximum	0.31
Minimum	0.12
UK/EU Limit	<1
Units	-
Number of Results	8
Samples above PCV Limit	0
Average	0
Maximum	0
Minimum	0
UK/EU Limit	Acceptable to Customer and no abnormal change
Units	Dilution Number
Number of Results	23
Samples above PCV Limit	0
Average	0.00
Maximum	0.00
Minimum	0.00
UK/EU Limit	0.1
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	<0.006
Maximum	0.034
Minimum	<0.001
UK/EU Limit	0.1
Units	µg/l
Number of Results	2227
Samples above PCV Limit	0
Average	7.58
Maximum	7.88
Minimum	7.34
UK/EU Limit	Min 6.5, Max 9.5
Units	pH value
Number of Results	23
Samples above PCV Limit	0
Average	0.81
Maximum	1.99
Minimum	0.44
UK/EU Limit	10
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	31.0
Maximum	49.7
Minimum	9.7
UK/EU Limit	200
Units	mg/l
Number of Results	8
Samples above PCV Limit	0
Average	55
Maximum	112
Minimum	29
UK/EU Limit	250
Units	mg/l
Number of Results	44
Samples above PCV Limit	0
Average	0
Maximum	0
Minimum	0
UK/EU Limit	Acceptable to Customer and no abnormal change
Units	Dilution Number
Number of Results	23
Samples above PCV Limit	0
Average	0.00
Maximum	0.00
Minimum	0.00
UK/EU Limit	10
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	<0.09
Maximum	<0.19
Minimum	<0.06
UK/EU Limit	3
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	<1.0
Maximum	1.7
Minimum	<0.4
UK/EU Limit	No abnormal change
Units	mg/l
Number of Results	44
Samples above PCV Limit	0
Average	0.011
Maximum	0.141
Minimum	0.000
UK/EU Limit	0.5
Units	µg/l
Number of Results	36
Samples above PCV Limit	0
Average	42.69
Maximum	75.17
Minimum	20.04
UK/EU Limit	100
Units	µg/l
Number of Results	8
Samples above PCV Limit	0
Average	<0.12
Maximum	0.24
Minimum	<0.06
UK/EU Limit	4
Units	NTU
Number of Results	23
Samples above PCV Limit	0

letssetup · Aug 26, 2020

He has just gone back to same place

don't know what too do...

AdoraBelle Dearheart · Aug 26, 2020

Do a 75% water change, as soon as possible.
You have an ammonia reading and your nitrites are sky high, and that's literally poison to fish. After the water change do another test, and if ammonia or nitrites are above 0, do another water change right away. Make sure to use water conditioner and that the replacement water is the same temperature as the tank water.

In the long term, your tank is far too small for mollies, let alone with the other fish you already have in there too. You have to resist the temptation to stuff too many fish into too small a box, or water builds up and poisons them, leading to nasty deaths.

letssetup · Aug 26, 2020

AdoraBelle Dearheart said:
Do a 75% water change, as soon as possible.
You have an ammonia reading and your nitrites are sky high, and that's literally poison to fish. After the water change do another test, and if ammonia or nitrites are above 0, do another water change right away. Make sure to use water conditioner and that the replacement water is the same temperature as the tank water.

In the long term, your tank is far too small for mollies, let alone with the other fish you already have in there too. You have to resist the temptation to stuff too many fish into too small a box, or water builds up and poisons them, leading to nasty deaths.

I don't understand why it's keep getting so high, I've done so many water changes in the last few weeks.

Anyone here use Sachem Prime and Seachem Stability? Is they a better adviced water treatment out there?

Am I feeding them too often? I feed them once per day.

Fish shop said 3 Molly's would be okay.

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Molly Fish - Not enough oxygen?

letssetup

Fish Fanatic

AdoraBelle Dearheart

Nutty fish nutter

Tez_20

Fishaholic

letssetup

Fish Fanatic

AdoraBelle Dearheart

Nutty fish nutter

Tez_20

Fishaholic

letssetup

Fish Fanatic

Tez_20

Fishaholic

letssetup

Fish Fanatic

AdoraBelle Dearheart

Nutty fish nutter

letssetup

Fish Fanatic

letssetup

Fish Fanatic

letssetup

Fish Fanatic

AdoraBelle Dearheart

Nutty fish nutter

letssetup

Fish Fanatic

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