back with more questions...now with my return pump...
According to my reading of several post, the recomended circulation of the return should be 5x of the DT volume, right?
if so then that means that my 135 gallon DT will need like 675GPH.
My overflow box it's an CPR CS100DX, which according to them it can handle 800GPH. I will be using 1" PVC Pipe for plumbing. And the sump will be at 5 feet from DT top rim.
Now my current selected pump, i've not buyed yet, it's an hyperflow 20, which according to them at 6 feet give 870GPH and at 4 feet 990GPH, so 5 feet shoulb be in between those values.
Now the questions :
it's ok to target a 800GPH flow even if that is beyond the 5x recommendations?
Can i slow down the rio HF 20 using a ball or gate valve and some T directed to the calcium reactor?
do i have to go a rio HF 17 instead? rated 660GPH at 6 feet