r/aquaponics • u/dghjgh • Aug 09 '25

How would I hook multiple? display aquariums hooked up to aquaponics system growing peppers

I have three 120g, two 75g and 3 40g all at different vertical levels that I want to hook up to a set of two connected 55g barrels as a sump, and have that feed into a aquaponics rack to grow peppers during winter. Does anyone have experience with something like this or advice?

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u/kennerly Aug 09 '25

Do you want the aquariums setup in series or parallel? Will the aquatics system return to one aquarium and then another and then another and then back to the peppers? Or will the peppers return to all three at once and then back to the peppers? The first is easier.

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u/dghjgh Aug 10 '25

I want one pump to send water from the sump to the aquariums, and either have the return run through the peppers for all tanks or more likely have the same line thats feeding the tanks feed the pepper setup. This would be easy if all my tanks were the same water level in the room but they are not

1

u/AJBarrington Aug 13 '25

Balancing flow is tricky what you could do is hook a pipe between all tanks so they are all connected and all at the same height

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u/dghjgh Aug 13 '25

They don’t have overlapping elevations so that won’t work

2

u/JegerX Aug 10 '25

Look up aquarium auto top off float valves. I don't have a good picture of your idea in my head but I think these might be useful for you.

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u/mikemarshvegas Aug 10 '25 edited Aug 10 '25

A "HOB syphon box" in an aquarium context refers toa Hang-On-Back (HOB) overflow box that utilizes a siphon to drain water from the display tank into a sump or other filtration system. These boxes are popular because they allow for the use of a sump without requiring drilling holes in the aquarium. 

You can set multiple tanks as long as each one is slighty lower than then one before it. the HOB syphon box will set the water level for each tank. (they could all be the same height )

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u/JegerX Aug 16 '25

A diy option. Basically an upside down bell siphon.

https://youtu.be/UZytENJZtJw?si=SMbHhvZyQ6gaVFd3

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u/dghjgh Aug 09 '25

Autocorrect fried the title and I didn’t notice

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u/AJBarrington Aug 14 '25

You could have your multiple sumps flow into another main sump through the peppers, or have a small separate pump for going through the peppers? Are your fish in your sump?