Cleaning the glass

[Delphinus]

I guess on average about 2x, 3x per week. Not very often (sometimes I'll let it go as long as a week, as long as I can still see into the tank). Basically it depends on how ambitious I feel!

I notice that each tank has very different schedules. One tank can't go for more than a day or two before it's too opaque and the other can go as long as two weeks before it gets comparable to the other tank at two days.