Hey folks, thanks in advance for the help! I'm setting up an RO storage system in my garage for water changes for my display tank that's in my den, as well as running a line up through my attic and over into my second garage where I keep a 100g tank and 4 20g QT tanks. The display tank aspect isn't what's in question, it's the high run up into my attic and over to the other garage that is in question.
My garage is about 11' up into the attic and then about 50-100' over to the other garage, then it will again drop down about 5-10' from the ceiling down to the tanks I'll be using it for filling back up. I'm using 1" PEX plumbing for the long line which as an ID of about 0.875". Using an online calculator https://pentairaes.com/pump-calculator
With the 0.75" tubing size selected, as it's closer to the 0.875" than the 1" the real ID is for the PEX.
Factors used in calculator:
4 90į fittings
7 GPM Flow rate
TOTAL Head Height = 22.3'
Just came across another calculator and this lets me put in the exact nominal pipe size, but minus the fittings.
7 GPM Flow rate
TOTAL Head Height = 17.9'
@0.75 = 25' Head Loss
So with these attempts at trying to figure out how much of a head height I need for a pump, that rules out MOST of the affordable pumps I was looking at the Hydor Seltz D - Varia Flo 3200
that a firend pointed out, as he's got the smaller 1600 and says it's working well for him. However it's got a max head height of about 16'.
I also came across this pump on Amazon Alpine PAL6550 6550GPH Cyclone Pump
@ 15' 2896GPH, @20 1659GPH, and @ 25' 422GPH. Now these numbers look like they ought to work and Amazon reviews are kinda hit and miss.
So does anyone have any thoughts on a $200ish inline external pump that should be able to do a decent head height that would only be used about once a week just enough to transfer about 100-200g a week?