Backyard Aquaponics
A place to discuss aquaponics

Only problem I see with shading the tank now is that the algae will stop photosynthesising (spelling). That would be a very rapid drop in DO levels and ph. If it was testing at 6.2 on a daylight reading, that is with the algae pushing the ph up by absorbing the CO2.
There was some discussion a while back on barley straw Thorn, can't remember the outcome