How often should i do a wc??

[em_witt]

Have a 75gal tank with 2-marineland penguin 350 filters(each for up to 70 gal) and 2-200 watt heaters
3-convicts(almost breeding)
3-firemouth
1-jack Dempsey
11-tiger barbs
5-6-mollies(fry as food that survived!!)
All still very small! About an inch(for the jack) to 3(for the firemouth)

 

[mohican]

Your gonna get a lots of different answers for this. I have 125 and do 40%(+) every 2 weeks and my tank seems OK. I'd like to do that same amount every week but life gets busy ya know. I'd say around 30% - 50% weekly just to throw out numbers. Your load is kinda heavy; even tho the fish r small. This depends on feeding and waste of course.

 

[em_witt]

I feed once or twice a day ( depending on my mood) usually flake food or small cichlid pelets with the occasional blood worms and brine shrimp

 

[LyndaB]

I would recommend 50% weekly. You've got some fish with large bioloads. I do 50% on all my tanks, no matter the stock.

 

[Aspencer]

IMO, the best was is to test daily and when levels reach near toxic levels, do a 50% water change. Your fish will get used to it if it is done on a schedule. Eventually, you will find your
schedule.

On my 55g, with just 8 Mbipia cf Lutea spotbar, every 4 days...

Toxic levels...Ammonia .25, NitrItes .25, and NitrAtes 40...

 

[Mogurako]

Depending on stock and I would do one or two 35-50% PWC a week. I do at least a 50% once a week on my 125 wether it needs it or not.

 

[em_witt]

Thx for all the advise!!

 

[Malawi Freak]

I would recommend 50% weekly. You've got some fish with large bioloads. I do 50% on all my tanks, no matter the stock.

I agree.

 

[Labenator65000]

I agree.

Me too

 

[nuwave59]

Because of the bioload, I'd go with 40%.

 

[sayan]

Agree with lynda B. Even I did 50% wc weekly. It help to keep the parameters great. And ofcourse keep my fish happy too.

 

[em_witt]

I'll do 50% then!!

 

[joel618]

I do at least 50% once a week. Ill do a smaller one durring the week when i find time.

 

[Jess1ca]

I, personally, am the queen of wc's so I may be of no help lol, I enjoy wc time and do it often. Fresh water can't hurt anything as far as I know