Is a HOB overflow better then say a DIY pvc overflow ?
They will both flow the same depending on pipe diameter
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Is a HOB overflow better then say a DIY pvc overflow ?
Either is fine.
PVC will be cheaper
The box will take up more room in and outside the aquarium.
But its really in the setup on how well it will work.
Worst case scenario is power outage right?
1. Siphon will continue until tank water level is below the overflow box so siphon breaks and your sump contains the 20 gallons or whatever depending on your didplay size
then
2. Siphon breaks and pump comes back on when power is restored. The pump is separated from the main sump so only a few gallons are pumped back until the chamber is below the pumps intake and pump burns up
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"And if I can't have everything, well then just give me a taste"
Drill a hole in the back panel of your aquariums glass. Install a bulkhead and run your PVC drain that way.
Then you dont have to worry about losing siphon.
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"And if I can't have everything, well then just give me a taste"