[Erikb3113]

i keep my hydroton layer visible and drain when the water level approaches the top. no rule to follow as far as time, on an as needed basis. not good to let your substrate become completely saturated.

 

[Erikb3113]

i just got a new sprayer that puts out too much water so with it being summer and higher humidity here, i foresee draining every couple of weeks. at least until i find a syphon that will take it all the way down to the bottom. after i drain more trickles it's way down and i end up with a half inch of water in the bottom that my syphon wont start with.
Think i will look into drains on future tanks. once my tanks reach the point where water actually makes it through the subtrate without being absorbed (this can take a couple months), it seems i start having to drain all to often