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I agree with dogstar, use a smaller diameter U-Tube or increase the flow and the air will push out of there. You want to match the U-Tube to the flow as closely as you can on the chance any air gets in there you want it to get pushed right out. Makes for a much safer design.

Mine loves his toadstool leather, he even brings it food.

Originally Posted by AquaKnight I was planning to cut everything off and switch to a gate valve. Good Idea Do I have to keep the same height on the return? What would going longer or shorter do? Do I keep the "T" and what would changing the height of the top bit do? It also necks down to 3/4"...

I've used a PAR meter on my tank and the egg crate does cut down on the light somewhat. I can't remember the amount but it was decently significant. It cuts down more so with MH lights as you get to the edge of their coverage area since the light is a point source. The light angle is much...

"SCWD" = Switching Current Water Device sold at many online outlets and in lots of local fish stores. Somewhere around $40 and takes in 3/4 inch tubing and puts out 2 outlets of 3/4 inch. The velocity of the water moves gears that cause the flow to alternate between the two outlets.

When you use PVC Cement make sure you use the PVC primer also. Otherwise the joint won't be clean and could weaken or leak.

One other major thing I noticed is you need 1" supply lines. 1" will drain 600gph if I remember correctly, or just a bit more then your Mag 5. 1/2" drains are way too small and won't be able to keep up.

1) You don't need tons of flow in a fuge, I do about 2X turnover per hour in my fuge and have live rock rubble where the water comes out that keeps it from disturbing the sand. I have also seen people place 90 degree or even a U at the bottom of the return to stop what you are worried about. 2)...

Oh, and I'm a big fan of putting Unions and ball valves all over the place. You'd be surprised how often something happens and you wish you had one somewhere else.

OK, here are my thoughts but I'm sure others will chime in as well. I don't see the need for the first baffle on the left, just let the water fall into the fuge directly. I think you need another baffle between the fuge and the return. Your return section will rise and fall with evaporation...

What do you have in your tank and what are your current Calcium and Alkalinity measurements (and PH, it would be good to know what your problem is, high/low/big swings)? If you haven't been dosing calcium and Alk right your PH will start to have problems. Need more info to give any help.

nope, egg crate is a lighting cover/diffuser. Basically a white plastic grid. You can find it in the lighting section of Home Depot or Loews. Comes in about a 4 foot by 2 foot panel and is easy to cut to any size using some wire cutters or something.

He will hide for awhile. Mine took a long time to even start to come out. For a long time he would only come out at feeding time, now he comes out all the time. Also when they molt they will stay hidden for some time. Try to look around for his tenticles you might spot him. I have a skunk...

The best answer is it depends on the personality of the CBS. Mine is afraid of the fish and won't go near them and doesn't bother anything else in the tank. He does a great job of cleaning up around the aquarium so I wouldn't want to be without him.

I had to wrap the bottom of the collection cup with electrical tape to make a good seal with the rubber o-ring. Mine never worked much until I put it in a sump.

In a Closed loop the gravity pulling on the water entering the pump cancels out the gravity pulling on the water exiting the pump creating a theoretical zero head. That is why in a Closed Loop when the pump turns off the water doesn't flow in either direction. It won't be exact but you can...

As easy as picking them up by their shells.

Are you pumping from a sump? With most pumps and headloss you should be fine although if the 700gph rating on your pump is with 4' of head you might be in trouble. At what head is that pump rated at? I like to put a ball valve in my return line no matter what. If the pump is fine you just...

I found that the Seaclone did not work well as a HOB skimmer. Too hard to set right always getting either microbubbles or no foam. When I installed a sump I used baffles to create a constant water level and put the skimmer in there up on some eggcrate and it started working very well. I get...

Originally Posted by Jon in Tx Thanks for the info! I'll check into the RO filter system. The fish that died were Cleaner Shrimp, Foxface, Yellow Tang (3), Strawberry Psuedo, Starfish (2), Bi-Color Angel, Formossa Wrasse, Yellow Tail Damsel, Crab-Sally Lightfoot & Slug. All were added slowly...