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Me First, me first. ;D
I just want eliminate the old wifes tale that MH's produce more heat then T-5's. That is completely not true. A Watt is a Watt which produces a certain amount of heat. If its coming from a light or a pump, the wattage will determine the heat. It may feel to you like a MH...
Yes, you wouldn't believe the size of the rock that crabs can move.
You can tell what kind of crab it is by the claws. Matrix crabs have rounded pincher's with no point on the end.
Where you connect the 2 sumps together with the 3/4 tubing, theres a few options you can do to keep the siphon going.
Drill a hole in the top of the 3/4 and glue in an air valve like the valve used for air line tubing.
1: Attach a $10 aqua lifter to the hose and the other end back into the sump...
Sorry I missed this one and a chance to see some great corals. :(.
Had a kiddie emergency.
I'll have to take a ride down that way to check out your tanks Terri.
Greg. I wouldn't rule out toxins.
I thought the theory was over rated too. Until my last break down. For years I was never effected by coral toxins. This time was different. I had creator burn marks all over my hands and arms. Looked like acid burns.