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Old 06-13-2012, 02:27 AM   #196
Leebee
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Thanks guys, great answers. I worry that the flow will be reduced too much on the output side of my canister. I don't think it would get that blocked from dirt on the input side, no more than any other part would.
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Old 06-15-2012, 08:07 AM   #197
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Another question, I don't think we have 1.75 inch pressure pipe here. I can get 50mm, or 30mm, 1.75 inch is about 43mm, we don't have that in Australia. My eheim canister is rated at 1050lph, any ideas on pipe size?
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Old 07-15-2012, 05:22 PM   #198
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so am I to understand (sorry for the dumb question) that the co2 is entering from the LOW end and water is flowing from the HIGH end to the LOW end?

I am far from a plumber and fomr wome reason this setup doesn't seem to do anything lol. I know it does its raved about I am just trying to understad the basic physics of it...
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Old 07-15-2012, 05:34 PM   #199
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This design provides for a counter-current flow, i.e., the CO2 bubbles are going up while the water is being pumped down. The CO2 will dissolve quickly in a counter-current flow.
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Old 07-15-2012, 05:49 PM   #200
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Quote:
Originally Posted by Mark Fisher View Post
This design provides for a counter-current flow, i.e., the CO2 bubbles are going up while the water is being pumped down. The CO2 will dissolve quickly in a counter-current flow.
Ok it makes a little more sense now thank you. Ug I feel like I am in a fog today.
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Old 07-15-2012, 06:57 PM   #201
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It's actually just basic physics. Gas rises water pressure forced down. The 2 going against each other with enough contact time causes the co2 gas to dissolve in the water and it then will exit the reactor.

You want the co2 inlet just about midwayish down the reactor. To low and the gas will escape into the tank to high not enough contact with the water to dissolve. Length of the reactor and diameter depend on flow of water. More flow larger reactor. I would say 2" at 18" is a good start point for most.
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Old 08-19-2012, 10:15 PM   #202
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Does Rex still exist in TPT? His last post was 2010. His web has a forum too but was ghost town.
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Old 08-20-2012, 02:43 AM   #203
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Hey Herns.

Nope, Rex has been missing for sometime. Last info I had on Rex was health issues caused him to no longer be involved in the hobby. His website will be up til it expires. But no one should try to buy anything from his site as you won't get it.
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Old 09-01-2013, 08:51 PM   #204
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I was looken for this for a bit finally found.
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Old 09-04-2013, 04:59 AM   #205
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Anyone know if the bottom has to be a 90 for this to work or will a straight through pipe work?
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Old 09-04-2013, 05:50 AM   #206
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Straight should work, but it could depend on the length of the tube and your flowrate. You want contact time with the water and if your flow is too fast and/or the tube too short, you'll end up with bubbles in the tank.

I switched from straight to 90's because the dang thing was so awkward under my stand it kept kinking the tubing, but if you install it wisely, that shouldn't be an issue
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Old 09-04-2013, 02:24 PM   #207
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Flow rate is probably in the 200's I have a sunsun 304a, its printed rating is 525 I think. Tube length is 24in will be mounted at a slight angle.
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Old 09-06-2013, 09:03 PM   #208
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Quote:
Originally Posted by wakesk8r View Post
I just recently built these out of 2" clear schedule 40.
cool being able to watch how it all actually works
How did u get the lights inside the tubes if they are internal?
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Old 09-07-2013, 04:15 AM   #209
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Quote:
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How did u get the lights inside the tubes if they are internal?
he use clear see thru pvc? I made one with polycarbonate tube stays clear for a long time. cost a little more.
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Old 09-07-2013, 01:23 PM   #210
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What if I built one and left the co2 inlet out of it and just used my up inline diffuser upstream of the reactor??? Would that help it dissolve any better?? I have the inline diffuser now but Im tired of a million little bubbles in my tank lol.

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25 gal.-api renastart xp1 anf xp2- 2 custom spraybars with diy inline heater and water change valve (so key!)-odyssea-4x24w t5ho. 4in raised.-injected co2 via up inline diffuser-florite and sane substrate.-java fern-amazon sword-marsilea minuta-water wisteria (crappy)-dwarf hair grass-anubias afanzeli (spellcheck)-telanthera cardinalis-10 tiger barbs-6 glofish tetras-7 otocinclus -1 german blue ram. females died.-2 albino corydoras. I know need 6
ei dosing and 6 hours light 100%
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