I will be mixing in a 44 gallon Brute trashcan. I spoke with someone that uses a mag 12 for mixing. He likes it because it heats up the water which helps the salt dissolve faster.
I agree that using gravity to drain is pretty fast. I think the venturi was actually a little slower than gravity.
For my freshwater I will be using gravity and fill directly from my sink into the tanks.
I just use Prime in the tank as I am filling it. I hated dumping the 5 gallon buckets.
For salt I want to mix with a MAG and also pump into the tank via mag. I think gravity drain should be ok for water changes.
Its all done with the goal of never have to walk around carrying/spilling 5 gallon buckets again.
The most I do for a water change is around 30 gallons. If I fill into the
sump I thought I would have to have a high flow to keep up with the tank pumps. If I leave the pumps off then I run the risk of overflowing the
sump.
Why not run the hose and fill from the top of the tank?
One problem is the top is about 7 feet off the ground. A MAG 7 might not be able to handle it or would it? I have been reading that many of the pumps only do about 1/2 the rating. So a 1200gph pump really is closer to 600gph when tested.
I need the real flow at 6 feet to be at least 300gph or 5 gallons per minute.
Maybe MAg 9.5?
