I have a 300 gallon tank with a 50 gallon sump. I replace 50 gallons of water every two weeks and my reef has been happy for ten years.
answered 2 years, 7 months ago
0out of 2found this answer helpful.
It is a very good practice to change 50% of your tanks capacity,every 14 days, twice a month.
answered 3 years, 9 months ago
E. Escondido. Ca.
2out of 10found this answer helpful.
Salt does not evaporate, so the basic mix with last until you decide to do a water change. Make sure not to add it if just topping up the tank because of water evaporation; add it for water changes only. I recommend a 10% or more water change per week, as this not only keeps up trace minerals, but rids the water of nitrites and detritus. If you can't or don't want to change the water as frequently, I recommend adding calcium, iodine or iodide (I use both) if you have coral or crustaceans. Many shrimp are excellent and cleaning parasites of of fish and slowing accumulation of detritus. the best ph for fish only is about 1.022, but should be a touch higher for coral.
answered 3 years, 10 months ago
3out of 8found this answer helpful.
You should only have to add more salt water after water changes and also when topping off the evaporation use freshwater because only the water leaves the tank the salt content doesn't.
answered 4 years ago
6out of 6found this answer helpful.