How often do YOU do a water change?

[ccg]

Hello everyone,

I am curious how often you do your water change(s), how much, what size of tanks you have, and what type of filtering you have.

Thanks!

 

[TwoTankAmin]

14 tanks from 5.5 to 75 gals, all contain live plants.

All tanks get a weekly water change of 35-40% except for discus and fry tanks. Discus get 25-35% every 2-3 days and fry get 10% daily and 25% when filter is cleaned weekly.

I have well water.

Filters: 2 Eheim Pro II 2026, 1 Emperor 400, 2 Hot magnums, 2 Whisper jr, 18 AquaClears from 100-300, 3 sponge filters

 

[Bloo]

14 tanks from 5.5 to 75 gals, all contain live plants.

All tanks get a weekly water change of 35-40% except for discus and fry tanks. Discus get 25-35% every 2-3 days and fry get 10% daily and 25% when filter is cleaned weekly.

I have well water.

Filters: 2 Eheim Pro II 2026, 1 Emperor 400, 2 Hot magnums, 2 Whisper jr, 18 AquaClears from 100-300, 3 sponge filters

Wow - that must like your job or something. Sounds as though you're cleaning tanks 27/7

 

[eudielynn]

I have two tanks. One is a 20 gal community tank with an UGF. The other is a two gal with a UGF. I do a 10-15% water change on the large tank every Wednesday and Saturday. Then I do a 50% change about once every month or six weeks depending on my readings. On the two gal I do a 50% change on Wednesday and 100% on Saturdays.

Don't know if this is the right thing to do, but I haven't lost any fish since I lost a danio when my tank was first set up and my fishys, frogs, ghost shrimp and snail all seem to be doing fine.

 

[abstract]

46 gallon, moderatly to heavily stocked, over-filtrated - 30-50% weekly
20 gallon moderatly planted, moderatly stocked - 25-35% every 2-3 weeks
10 gallon lightly planted, over-filtrated fry tank - 20-30% weekly

 

[Bloo]

Hello everyone,

I am curious how often you do your water change(s), how much, what size of tanks you have, and what type of filtering you have.

Thanks!

My 180 litre I try and change 40% once a week and stretch to 10 days max.

 

[FoundMoney]

I'm probably not the right guy to ask because I've had a lot of fish deaths. Anyway, I have a 30 gallon tank and I take out 5 gallons approximately once per week. It actually is more like every 5 days. Every other time I also syphon the gravel as I'm removing the water. About once every 6 I do a larger water change and gravel vacuum where I take most of the decorations out of the tank and do about 50% water change. This seems to work in terms of good water quality. My ammonia and nitrites are at zero. Even my nitrates never go above 5 ppm. It hasn't prevented some fish losses in the last few days, though.

 

[bunjiweb]

my 50 and 57G tanks get 10% change every 3 days usually.

15 and 9G tanks get 10-15% change once a week,
3, 5 & 6G tanks get changed weekly if i remember, or whenever i decide to top them up.

Ben

 

[CFC]

All tanks, ranging from 20 to 200 gallons 25% water changes twice every week, with the exceptions of fry tanks which get 10% every day.

 

[Grey Legion]

I do a 25-35% once a week... I may switch to twice a week

 

[elgecko]

29 Gallon discus tank - 28% twice a week.
40 Gallon tank - 33% once a week

 

[Jen]

35 gal, currenlty hang on back filter with carbon sleev insert, soon to change (probably tonight) to external canister filter.

I change 25-30% every 2 weeks.

 

[bunjiweb]

Maybe i should change more water.... never had any problems with levels or illness, just had whitespot once when i bought a fish which had it already

Ben

 

[morgan]

I have a 6UK gallon tank with a built-in filter. I do 20% water change once a fortnight. I have never(touch wood) had any illness in the tank.I treat the new water before using. My maths is way out, the tank is 80litres which is about 19 uk gallons. I was reading the chart wrongly.

 

[nc_nutcase]

125 US Gal - 25% weekly (30 Gal)
55 US Gal - 18 - 27 % weekly (10-15 Gal)
29 US Gal - 17 - 35% weekly (5-10 Gal)
5 US Gal - 80-90% monthly

Tuesday is fish maintenance day for me. I gravel vac the 125 every week and pick one other tanks to do heavy cleaning on. I also give each filter cartridge a simple rinse in the 'old tank water' weekly. My filtration is listed in my Sig.

Note: the 55 Gal just finished cycling so it is getting water changes every other day for 8 or 10 days until my dwarf cichlids come home. Once the aquarium is stocked I'll have to closely monitor it and adjust maintenance as needed.

I made a spread sheet calendar to make notes on and keep track of maintenance, problems, new fish, births, special feedings, plant fertilization, etc. This simple calendar has made maintenance go a lot better.