how often and how much do u change the water in ur reef tanks,ive got a 100 gal reef tank setup and some people tell me to do 10 gal a week or 20 gal a month do u really need to do it weekly? if not how much bi weekly thanks?
I think the sys is better of if you do a smaller more frequently as the sys will not change as drastically than one bigger one. I am going back to 1 gallon a day work very well for me hth.
how often and how much do u change the water in ur reef tanks,ive got a 100 gal reef tank setup and some people tell me to do 10 gal a week or 20 gal a month do u really need to do it weekly? if not how much bi weekly thanks?
If you have a big bio-load and feed a lot, like 3 times a day and a not so super skimmer, then 10% a week should be done...if not weekly, the bi-weekly 20%.
I do 10% a week on my 75g even though I feed only once a day...Mixed tank, mostly sps dominated....
No matter how much or how often you do a water change, you want your parameters to stay generally the same as far as calc, alk, mag, etc. i.e. you wouldnt want to do a large water change and have your alkalinity drop from 11 to 7.
