evaporation top off problems.....AGAIN

[vidextreme]

not true.

plankton almost does not exist or in too little amount to make significant differences in our enclosed tank system. our water is too sterile. and cloudy water is not dead plankton.

plankton is microscopic and consist of many classes. phytoplankton, zooplankton, etc.

I stand corrected. http://www.algone.com/aquarium-articles/aquarium-basics/cloudy-aquarium-water

btw, I stopped trusting a swing arm hydrometer when I bought two of them, different brands and they both read differently.