Reef Octopus Calcium reactor reviews? Dual vs single?

[captainsmitty]

I forgot about the uniseals. Put them on a yearly replacement list... you do not want to wait until they go bad. I have a no-uniseal policy now after having a unit a long time ago with them.

If you are going to control with Apex, then a second chamber is probably a good idea. With your high demand, you might soon switch to not use a pH controller anymore, but the second chamber will not hurt anything if you do.

My AquaMaxx leaked air in through the pump tubing. Easy to fix, but it took me a while to figure it out. If you get one, then just seal all of the connectors going to the pump, and away, when you get it.

what are the uniseals that you referred to?