75 Gallon Sump Build - The Planted Tank Forum
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post #1 of 3 (permalink) Old 03-15-2017, 12:27 AM Thread Starter
Algae Grower
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75 Gallon Sump Build

Hi all. I have been reading and lurking for a while. I recently moved and decided to upgrade my 75 gallon to a 125. I would like to convert the 75 gallon into a sump.

I will be injected CO2 and would like to keep off gasing to a minimum. The drain from the main tank will be submerged over a layer of filter pads from course on top to fine on the bottom. This will sit on top of egg crate and the water will travel up through filter floss.

The next section will be for fish isolation (Not quarantine or hospital. I know it is the same eco system.) Section may very well go unused most of the time. Water will then go down through another filter pad section and continue to the bio media.

After the bio, water will spill over to the pump/heater section. I have made this section so large because i plan on making this a planted discus tank in the future and will be doing daily or every other day water changes and plan to drain and fill from this section. With this in mind, would it be a better option to make the last baffle wall egg crate instead of glass to allow the bio media to be exposed to air when drain downs occur?

Any input on the design would be greatly appreciated
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post #2 of 3 (permalink) Old 03-15-2017, 12:36 AM
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I did the same thing, design looks great. I would keep the last baffle as is so that you can drain all other sections and leave the media submerged for extended maintenance. It also keeps evaporation from leaving your media exposed, not that it is likely with the water change schedule of discuss. The isolation is a 'meh' idea in my eyes. Keeping a running hospital/quarantine is likely better and easy, but it won't hurt to have it.

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post #3 of 3 (permalink) Old 03-15-2017, 01:03 AM Thread Starter
Algae Grower
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Thank you.

I keep going back and forth on the isolation. For now I figure better to put in in now rather than regret it later.
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discus planted tank, diy, sump

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