Return plumbing Return plumbing also completed.... This time I am using two power heads 6000L/H each. They will run with A relay which is a simple electromechanical switch.
I used DIY check valve as well. As you know, when the pump get stop it will allow water to stay in plumbings instead of drain in sump and will not cause bubble in cause of start again.
Lighting I have done little bit of lighting.... installed 4 electronic ballasts for T8. 2 x 60 36W fuji purpal and 2 x 36W High out put cool day light.