Thinking bout doing a DIY wet/dry for my 75

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J

joeytoe

Semper fidelis
MFK Member
Sep 10, 2005
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Ive decided to setup up my 75 gal come spring as a bare bottom grow out tank/extra tank. An was thinking of doing a wet/dry for it, Would a 20 gal L be big enough or should I get something bigger for a DIY wet/dry?
 
A 20gal is plenty big enough for a w/d on a 75gal. I use one on a 125 gal. It takes 2.2gals of 1.25" bio-balls to filter a 100gal tank. If you use plastic scrubbing pads, the needed amount od material is 1/3 that of bioballs (bio-balls has 160 sq/ft of surface area per gal: scrubbing pads have 390 sq/ft of surface area per gallon)
 
Oddball said:
A 20gal is plenty big enough for a w/d on a 75gal. I use one on a 125 gal. It takes 2.2gals of 1.25" bio-balls to filter a 100gal tank. If you use plastic scrubbing pads, the needed amount od material is 1/3 that of bioballs (bio-balls has 160 sq/ft of surface area per gal: scrubbing pads have 390 sq/ft of surface area per gallon)
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Ok cool, any recomendation for GPH? I was thinking bout using a pump thatd do somewhere around 1000gph.
 
1000gph at the outlet will mean 750-800gph at the head. That's 10 times the volume of the tank. A little much for most non-riverine species. Look for a 750-800gph pump. They'll provide roughly 600-700gph at the head which is plenty for a grow-out tank. For growing out small fry, use as wide of an intake as you can install and cover it with a foam sponge tube of bonded filter material. This will keep fry from getting sucked onto the intake.
 
Oddball said:
1000gph at the outlet will mean 750-800gph at the head. That's 10 times the volume of the tank. A little much for most non-riverine species. Look for a 750-800gph pump. They'll provide roughly 600-700gph at the head which is plenty for a grow-out tank. For growing out small fry, use as wide of an intake as you can install and cover it with a foam sponge tube of bonded filter material. This will keep fry from getting sucked onto the intake.
Click to expand...

Ok Thanks, I was thinking of doing a DIY overflow an spray bar outve PVC, with either these http://www.drsfostersmith.com/Product/Prod_Display.cfm?pcatid=4080&N=2004+113783 to keep small fish out.
 
Those strainers are OK for a 200 gph filter but, there would be too much suction around that small a strainer with 700gph on it.
You'd need something like this from aquaticeco.com (with a foam pre-filter sleeve on it):

pipe screen.jpg
 
Oddball said:
Those strainers are OK for a 200 gph filter but, there would be too much suction around that small a strainer with 700gph on it.
You'd need something like this from aquaticeco.com (with a foam pre-filter sleeve on it):
Click to expand...

Once again Thank you Oddball.
 
I would look into nylon scrubbers too. I think they have more surface area.
 
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