Make an overflow box

DIY overflow/scrubber
Convert an HOB filter into an overflow

Category:

Education

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• 01

[mrdnastynice]

i have the same filter and did this same set up. its near impossible to get the flow even and perfect. if the gph is off in the slightest it will flood. no one try this, screw this video. screw this guy. i tried this set it up the same filter and all. You can not even the flow . Worst idea ever. Fuck this video

[feedthemachine99]

@mrdnastynice

I guess your just a dolt then...You need to have a ball valve ,,even with a conventional overflow box you need one...

Sorry you couldn't manage to figure out this simple set-up

[mrdnastynice]

@feedthemachine99 i have a ball valve its set up the same as yours. i spent hours trying to get the flow right. never could. if its off by 1 gph it will not work. and your with an overflow you do not need a ball valve at all. yea this simple set up DOESN'T WORK. the end.

[feedthemachine99]

@mrdnastynice

An overflow box and a return pump will still not match exact GPH,,you do still need a ball valve to adjust the return.Even 2 exact pumps with the same rated GPH will not match EXACT!

[feedthemachine99]

@feedthemachine99 You also have to consider your head loss and PVC diameters,saying it doesn't work is not quite accurate It may not be as good for smaller systems,say 55 gallons or less,but on large systems where the volume is over 150 its not too noticeable if off by a gallon or 2 either way Just top off every night ..Instead of being a cuss,why not ask for more direction or advice.

[4thGloryMonday]

What's wrong with putting the intake line on the bottom of the filter does it have to b on the back of sides? Your reply would be greatly appreciated. Thanks man

[feedthemachine99]

@4thGloryMonday

I'm sure that would work also,,the reason i didn't was because the bottom of this type of filter is not smooth..It has ridges and would have been harder to get a nice bead of silicone around the pvc

[quirqy11]

Thanks a bunch i bought a top fin 20 and did what you did to your filter and i have it on my 20 gallon. But i use a 5 gallon instead of a 10g as where the water goes

[feedthemachine99]

Lots of comments since i last checked..Thanks for looking...I am no longer running this however..Not because it was faulty or bad ...simply because i upgraded and needed much more flow to my algae screen than this would provide ...It worked great for the time i used it

[feedthemachine99]

@bewwio

You are correct,,This is why you Must install ball valves .....

Even on conventional overflows you have to do this..I no longer use this set-up and now use gravity fed overflow boxes,,but you still need ball valves