fowlr water change schedule

saltyESQ

New member
I have a 190g tank and was thinking of doing 150g water changes yearly.
I regularly dose sugar to keep nitrates down.

what does everyone think of this?
 
Re: fowlr water change schedule

I regularly dose sugar to keep nitrates down.



Could you explain this for me? What you use, how much, how often, and why it works as well as any potential drawbacks?
 
check the thread.

People think I am crazy, but I heavily dose sugar (about 7 tablespoons) and have never had any negative effects. The one thing that is required is a good skimmer.

before sugar dosing I had a problem with my skimmer and it was almost non functional and I didn't know it. I never tested for nitrates and when I decided to finally test, my nitrates after cutting the tests in half 2 or 3 times came in at 550ppm. Within a week and half of sugar dosing I brought it down to 20ppm
 
I would change water more often than every year to 6 months. I know you are just setting this tank up, but frequency of water changes should depend to some extent on water quality parameters. however, even with good test results over the long term, I'd do some kind of water change at least every month or so because there may be quality parameters that you don't have a kit for, where a water change would be beneficial.

Is there a reason it is very inconvenient to do modest monthly water changes of 20-40 gallons?
 
what snommisbor said... you really can't measure all the chemicals that may need to be in balance. frequent, or at least regular, partial water changes are good insurance for the stability and health of your tank.
 
water changes will also help keep ph, kh in range as well as export phosphates that build up from food and fish waste. i vote for smaller regular water changes. jmo
 
I was changing 50g out of my 240g system once a month before I got my Schuran denitrator. I've been running Zero ppm of nitrates for the past 6mths, but I've still been changing out 50g once a month.

It seems that my fish are much happier and more lively after I change the water. As others have mentioned, there are probably toxins in the water that we can't test for.

A buddy of mine who also runs a denitrator changes 25% of his water every 3 months, so maybe I'll consider extending my changes out to once everything 1.5, then 2mths.

If your nitrates are low, in the 20ppm range, then my vote would be for larger changes less frequently.
 
Just going by what I read on that thread, the only way you should go that long without water changes is if your testing every chemical possible and dosing whenever things get low, including things like Iodine, Magnesium, etc....
 
SaltyESQ, I agree water changes are a PITA. I do them regularly because I can tell my tanks don't look as good and fish are not as happy if I don't. There are ways you can make water changes easier - talk to some of the good LFS or ask around on the forums for ways to save labor. Or hire someone to do it for you. You've invested way too much into your tank to lose fish to stress or disease because of too infrequent water changes.
 
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