Fish Lying On The Bottom Hardly Moving Around

[tonydb]

Hey all
 
First of all my perimeters etc
 
PH 6
Ammonia 0 ppm
Nitrite 0 ppm
Nitrate 10 ppm
Temp 26
64 litre tank
2 live plants (not sure what they are but been there since fish less cycling)
2 mollys
1 pleco
1 swordtail
6 platys (think this is correct ,ive forgotten)
 
One of my mollys is sitting on the gravel ,i can see it breathing but it isn't swimming around like the others.I fed them earlier and im sure it came up for some food,but went back down again.Ive not had them in there for a week yet as i put them in last saturday afternoon.The only thing that i can think of is the PH level is quite low.And i cant seem to keep it up even with water changes.I had a peice of drift wood in there which i thought was the cause of the low ph and took it out but it seems that wasnt the case.I was going to do another 25% WC 2moro afternoon anyway , should i do more?
 
No idea what to do here i dont wanna lose the fish but it isnt looking good,i just hope its somthing simple like its resting ??

 

[sawickib]

Hmmm not sure, you don't want large pH fluctuations though.

What's Pleco do you have?

Sorry I couldn't be of help, someone will be able to help you though.

 

[Ninjouzata]

Is your molly a female? I hear of livebearers usually going to the bottom before giving birth. Sorry am not of much help, hopefully someone with more experience will be along soon!

 

[tonydb]

Ok checked this morning and he/she is swimming upside down and sideways etc...
 
Must be swim bladder, time for a DE shelled pea.
 
Only thing is I know I have to stop feeding them for a while but wont the lack of food affect the other fish in my tank?
 
Or do I need to isolate the poorly fish??

 

[Ninjouzata]

If you can get some daphnia that'd be better than the deshelled pea.
 
Fish can go 2 weeks without food so I wouldn't worry about lack of food for a bit.