I've looked at the head pressure thread and it's missing a LOT of charts on photobucket.
I have an Aquaforce 2700 pump that feeds a DIY filter using a 55 gallon drum, which is pressurized. I want to move the filter and expand it to two drums (mech&bio).
Here's the pump with it's flow chart:
https://www.aquascapeinc.com/product...ling-pond-pump
I'm trying to figure out exactly what I'm looking at for friction loss in this system and if my pump can do it.
I will be pumping downhill slightly and then drums are 3' tall. Both filters will flow from bottom up, and I expect at least the first will end up being pressurized due to the flow.
My questions are:
Do I calculate TOTAL length of pipe/tubing+elevation or just pump->filter+elevation?
I'm using a calculator like this - https://www.absolute-koi.com/tdh-calculator
For the GPM input- should I enter the maximum output of the pump because that's what it's trying to shove through the pipes? I ask because I know if I pressurize both drums, I'll have extra pressure (more than gravity) on the return piping that will only have about +2ft elevation head pressure otherwise.
I was quite confident the pump could do it, but when I entered total tubing length less any fittings and then added elevation it came up to a number that exceeds my maximum head pressure and I really don't want to make this move and then find out I need a larger pump that is hundreds of $$ extra. Help please.