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building a diy carbondoser ext500

1074 Views 6 Replies 4 Participants Last post by  sphack
I ordered some plants from and decided to try their internal 500 reactor after talking to them. They made it seem like they engineered it high tech and it is miles ahead of anything out there. Here are pics.

This is obviously nothing more than dozens of threads about building your own out of a vacuum tube and power-head. They didn't even try to look all that professional, looks like the tore the hole in the bottom. for $45, I'm sending it back.

So I looked at the cerge design, and it appears they have copied this as well, for their corbondoser ext 500, adapting a power head to it. Same one as internal, rio 90. This uses same house filter, but clear, and they seal the power cord opening somehow. would take out the 90 degree bends.

Question would be this: problem with reactor is decreasing flow from canister. I have a fluval 406 which rates at 383 gph.
OK so you have 300+ going into reactor. But then at the bottom of the reactor you have a 85 gph rio 90 sealed to the outlet. Am I right that there is no way for the outflow into the tank to be any more than 85gph whether you have a fluval 206 or some fx5 super pusher hooked up?
Am I wrong about this? How could anymore gph be put into the tank, and that just doesn't seem to be enough. Or do I have this all wrong and I'm missing something? I would like to build this reactor, with a rio pump for $15, house filter container $25 pulse pvc, fittings etc. but why would I want to decrease output of canister to 85gph max, unless I'm an engineering idiot about the flow issue.

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if the rio pump is connected to the out put line then you woulnd not need to run inline with anything.
if it isn't then it just makes the water spin in the reactor like a wirlpool
I read it's an external reactor, not an in line. no need to hook to anything
I must clarify. I am returning internal reactor and interested in building the external version:

I don't see how the flow could bypass the rio pump as it's plugged right into the exit tube in the cerge reactor design
is the pump connected to something else than the output tube? hard to tell from the picture. If it is than I can see it circulating mixture better.
I don't see how the flow could bypass the rio pump as it's plugged right into the exit tube in the cerge reactor design
The pump is just for moving water from below the sponge to above it. The outflow from the reactor does not go through the rio.

I looked at buying my own but the big box stores did not have the pieces I need. I probably could have build one cheaper but didn't find all the parts I needed easily. Btw I like the ph probe holder from them.
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