Power Head

I believe you are setting up an unde gravel filter, right?

Get a power head rated for around 75gl. tanks. This will give you extra current and you can reduce the flow if necessary.

As for brands, not sure which one to get.
 
That depends on the purpose of the powerhead. Are you just trying to create some current or is it part of your filtering? If you're creating current, what are your future occupants?
 
Addition

What I am thinking of; is that I am planning as I mentioned build the filter and put it under the main tank, the way I am planning is to drill a hole at the side bottom of the tank to allow water to flow to the filter under and to use the power head to flush the water back to main tank, my question is, does drilling a hole in the glass drive to break the tank after filling water….. The tank measure is 39” x 22” x 16”
 
If the tank is glass, I don't think you'll be able to drill a hole in it. Most aquariums use tempered glass, which will shatter if you try to drill it. I'm not sure what the cutoff is sizewise when they srat using tempered glass, but I think it may be something like anything over 10 gal is tempered. You could still use the external filter idea, you'd just need to buy or build an overflow box for the tank instead of drilling it.
 
I am using thickness of 8mm glass, I checked at the market they can do a hole in glass…. This is not a problem, but I am concern after filling the tank with water….
 
Shamil, the project you describe has some serious engineering issues. Yes you can drill a hole in glass, even as thick as 8 mm. But can you keep it sealed? 55 gallons can be an awful mess if it gets away. I would rethink the plan and try to incorporate a solid tank with a siphoning arrangement instead.

I tried to see the web page example you cited but it doesn't seem to exist.

Good luck.
 
Hereford said:
Shamil, the project you describe has some serious engineering issues. Yes you can drill a hole in glass, even as thick as 8 mm. But can you keep it sealed? 55 gallons can be an awful mess if it gets away. I would rethink the plan and try to incorporate a solid tank with a siphoning arrangement instead.

I tried to see the web page example you cited but it doesn't seem to exist.

Good luck.

In the attached picture you can see a simple draw for my project

Draw for my tank.JPG
 
look like just a sump. i would drill the hole at the top of the tank just in case you have power outage, so all the water will not drian your tank when your pumps off. you can goolge diy sumps and find out more, they are quite common. i plan on one as well, (i would drill my tank at the top side if it wasnt filled with water)so i plan on i plan on a extrall over flow.www.monsterfishkeepers.com has a great diy section.
 
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