Plumbing question - The Planted Tank Forum
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post #1 of 5 (permalink) Old 12-19-2011, 12:46 AM Thread Starter
Algae Grower
Join Date: Nov 2011
Location: Virginia Beach, VA
Posts: 10
Plumbing question

The filter canister that I used to build my CO2 reactor (Cerge's reactor) has 3/4" sockets for the input/output, but the actual holes throughout the canister look to be 1/2". I bought an Eheim Compact+ 2000 pump and it has barbs for 3/4" ID hose.

Will the reactor itself cause problems because of the smaller diameter opening? When I buy the hose and fittings to make the intake and return, would it still make sense to use 3/4" ID as I planned, or would 1/2" ID to match the reactor be better. Or would it make sense to get a different pump that had 1/2" ID fittings?


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post #2 of 5 (permalink) Old 12-25-2011, 10:32 PM Thread Starter
Algae Grower
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Location: Virginia Beach, VA
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post #3 of 5 (permalink) Old 12-26-2011, 12:49 AM
Planted Member
Join Date: Aug 2011
Location: oregon
Posts: 179
I have an inline diffuser on my canister which uses 1/2" tubing while my canister uses 3/4". I just used the half inch because it's what I had on hand. I heated it up and forced it over the canister barbs. Least I know it wont be coming off anytime soon.
I haven't had any problems using smaller diameter tubing, but you never know.
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post #4 of 5 (permalink) Old 12-26-2011, 07:21 PM Thread Starter
Algae Grower
Join Date: Nov 2011
Location: Virginia Beach, VA
Posts: 10
Thanks for the feedback, I'll try it that way since I also have pretty much everything I need to use the 1/2" on the return.
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post #5 of 5 (permalink) Old 12-26-2011, 07:59 PM
Planted Tank Obsessed
Join Date: Nov 2009
Location: Sacramento,CA
Posts: 311
Yea, just dip the tip of the hose that needs to go on the larger barb end in hot water for a little bit. Maybe a minute or two. Presto. You've got a custom made tubing that connects from 1/2" to 3/4".
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