As far as I know, it depends on ur setup. Most ppl change 20% water monthly or maybe every 2 months provided they have nice CO2. Some manage to maintain it without changing water for half a year or so. Still, you gotta add water once in awhile anyway. Seems to me my tank drys up pretty quickly. Anyone care to share some tips bout less changing water or making dripping tank? Nice pics btw.

Hmm, seems you guys does that water change 30~40% weekly. Mine is sort of shrimp tank. Did some research and found that to maintain good bacteria cycle for my shrimps I cant do that much water changes. Maybe I should do erm, 20% every 2 or 3 weeks (now I still doing 20% monthly)? How does that affect to the plants for you guys? So far my plants seems fine since most of them are moss, easy to take care of. But cant be sure for long term view like maybe 1 or 2 years.