|Yesterday 01:06 PM|
Fail! I can't seem to edit my post.
I was saying that there is an extremely limited selection of PVC at my local big box stores, so almost everything I bought was brass. Aside from the weight, are there any issues with this? I have brass fittings feeding water to my refrigerator for drinking, so I'm assuming it is safe for my aquarium inhabitants too. Do I need to clean / treat the brass in any way before sending water through it to my aquarium?
|Yesterday 01:03 PM|
|Donutz||Phew! I finally finished reading this thread (took a few days in my spare time). I went out last night and got all the parts I need for this but almost everything I got was brass due the extremely limited selecti|
|02-28-2014 11:19 PM|
|02-28-2014 10:33 PM|
|02-28-2014 07:53 PM|
|02-28-2014 07:01 PM|
|02-28-2014 05:25 PM|
The trickle column design is the standard in industry in absorbing CO2 - for example from power plant emissions.
It should also work in aquaria - provided its done right. Water should pour from the top and most of the media should be exposed to CO2 - not submerged or flooded. CO2 should be bubbling from the bottom - this could be done through a dip tube. A simple counter current setup.
If anyone's interested I can post a drawing or build one for the cost of parts.
|02-28-2014 03:07 PM|
|kman||I think the issue isn't necessarily increased absorption, it's flow. Adding the bio balls and similar may help absorption, some, but it will lower your flow.|
|02-28-2014 12:38 PM|
|02-28-2014 03:05 AM|
To double CO2 absorption better payback is in increasing gas-liquid surface area (ie double the area). Add bioballs or other media with large surface area-not the sintered, ceramic kind with tiny internal pores. Like this - designed for gas exchange:
Just my 2 cents.....
|02-27-2014 11:39 PM|
|NickRummy||Ok I was thinking all the bubbles would stay inside the standpipe with it being the inlet but I guess the flow is too strong and just pushed the bubbles right through before breaking them up. I'll get it switched around.|
|02-27-2014 11:31 PM|
|xxxSHyXAxxx||yes switch the in and out. I also cut a course filter sponge to fit inside the canister and it's towards the bottom of the tube and it catches the small co2 bubbles and prevents them from exiting the reactor|
|02-27-2014 11:09 PM|
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|02-27-2014 11:03 PM|
Here's my issue. CO2 is running right around 2bps. CO2 is coming through the center pipe. CO2 isn't disolving and is just going right through the pipe and into the canister.
Should I reverse input/ouput (like the canister labels suggest) so the water coming in goes into the large canister and out through the standpipe? Will the CO2 just gather in the top of the reactor? It seems like my bubbles are hige compared to others.
Here's a video
|02-26-2014 12:30 PM|
I read more about using the pipe in the middle of a reactor as the inlet or output and it seems people use it either way. I guess I just need to figure out why the bubbles are so large and not mixing in that center tube.
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