10 Gallon Tank Heavy mineral concentration, solution?

Hi

i read that having an uncovered fish tank will lead to evaporation and buildup of minerals and metals that can harm your fish (aka old tank syndrome).

But i have not read any solution. So if you do encounter OTS and covering the tank is not an option, how do you improve the water parameters?

for example, if you change 33% every week and get hit with OTS, do you bump up the %? if so, how much is safe?

 

Waterchanges will simply solve this.
All my tanks are open tanks. No issue

 

Dilution is the solution.

If you are doing 33% weekly, and you find that is insufficient, then bump that up to 50% and see what that does for you.

 

Agree, waterchanges will help and topping off inbetween waterchanges only with RO or distilled water, not with tap.

 

As MacZ indicates, you should not be using tap water to replace water lost to evaporation in an open top tank. All of my tanks are open, so I use RO water to top off the tanks. I lose about 2% of the water daily from each tank due to evaporation. If you top off with tap water, you will be gradually increasing the mineral concentration in the tank.

Check the GH of your tank and compare it to the GH of your tap water. If the tank is significantly higher, do a few extra water changes to get it down to where you want it to be.