reeflow advice
 

Can you restrict a reeflow snapper down to 1000GPH roughly, (restricted on the outflow side)?
thanks

yes, you can throttle back the outlet, never restrict the inlet as that can cause the impellar to cavitate, you could also run a bypass

lots of people do, but do a calculation on here to see what you are at. http://www.reefcentral.com/calc/hlc2.php. No reeflo's on there, but you can use it to find the head loss, then go here:http://www.reeflopumps.com/lowspeedhighflow.html Reeflo's lose flow very quickly if there's any back pressure, so most of the time after fittings, etc, you have 9-10' of head and are already at 1000gph. An easy way to do reduce more flow is to use a Tee and have a ball/gate valve that drains back to the sump. THat will redirect the flow without back pressuring the pump.

Restricting pumps on the outlet side is fine. When you throttle back a pump it uses less power but may generate some extra heat in the water.

I'm fairly certain Reeflo is on there. They're the sequence ones.

thanks for the help.
I saw J&L has snapper hybrids on . Is that a different pump than a standard snapper.

sequence 2400seq10 is close

different impeller