DIY wave maker?

Hmmm ââ"šÂ¬Ã¢â‚¬Å“yes looks like the mag 9 is going to bee the right choice. It has 3/4ââ"šÂ¬Ã‚ outlet, just like the OM. According to the table at 5` high I am going to have about 750gph.No to mach left for my wavesââ"šÂ¬Ã‚¦
 
Your powerhead must working constantly... if it will broken, water will drain into your sump, so surface level will definitely low

I think sump above your tank will be working better and will be safer.
 
<a href=showthread.php?s=&postid=6700389#post6700389 target=_blank>Originally posted</a> by diver_ua
Your powerhead must working constantly... if it will broken, water will drain into your sump, so surface level will definitely low
I think sump above your tank will be working better and will be safer.
Click to expand...

You are absolutely right!If the pump is off water will drain trough it back to sump and overflow .I think check valve need to bee added to this project.
 
Check valves are useless for ou purposes. You need to have the returns setup so that they are just below the water surface. You can add siphon break holes of needed. Check valves restrict flow, clog up, and most of them have metal in them that will rust or contaminate your tank water.
 
<a href=showthread.php?s=&postid=6701427#post6701427 target=_blank>Originally posted</a> by BeanAnimal
Check valves are useless for ou purposes. You need to have the returns setup so that they are just below the water surface. You can add siphon break holes of needed. Check valves restrict flow, clog up, and most of them have metal in them that will rust or contaminate your tank water.
Click to expand...
Siphon break holes are holes just above water surface in the return pipes?
 
Check valves load up with either calcium or tank junk and need to be cleaned regularly to work right. They also further restrict flow from the pump. I think the best alternative is to drill a 1/4" anti siphon hole in the return pipe just below the surface and leave enough room in the sump to handle the water in the piping without overflowing.

After I set up a tank I replicate a power failure by tripping a GFCI then restart to make sure everything works right.
 
ricky I am aware of the different types of check valves, but they really have no place in our systems (are at least for the purpose of preventing a tank from draining into a sump). It is not a matter of when they fail it is a matter of when they fail. I know some folks with some very large tanks that rely on them and it makes me cringe every time I think about it.
 
I agree ,the check valve is a wrong idea.But I like to drill little hole in the pipes just above water level in the tank so if pump stops water drains back pulling air in and the pipes are going to bee felled with air and that stops water back flow.
 
I built my sump large enough so that I did not have to worry about siphon breaks. I lose about 3 inches from the display during a power outage. It fits in the sump with 20 gallons or so to spare. I did not want to have to worry about keeping siphon breaks clean or worry about snails and other critters blocking them.
 
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