Originally Posted by xxUnRaTeDxxRkOxx
DIY co2 wasn't meant for bigger tanks, with that said you can try 1 gallon milk jugs & see if that works.
Yeah, I know and I have a pressurized system on hand, I just need to re-certify my tank and set it up. This is just a cheap way test to see if I get benefit from co2 injection since my tank is a weird setup, it's a combined system of two tanks and a sump connected via overflows. The total water volume is large, but I only want the co2 in one tank which acts as a refugium as well as home for my african clawed frogs.. it's full of fast growing plants and floaters. If I see a real impact, I'll set up the pressurized system, if not, I'm going to use it on a tank I'm planning on setting up in a few weeks.
If the bucket is getting pressure and your not getting any bubbles there HAS to be a blockage somewhere I would put a bubble counter in between the bucket and the tank to see where the leak is
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I have a bubble counter between the bucket and tank. That's what I've been checking for activity.
Soapy water and a spray bottle. Spray around the rim of the bucket, fitting, any connections.
If you can see the lid bulge, you are getting some pressure build up. Lean on the lid to add a little extra pressure to see if you can hear the leak.
How did you attach the hose to the lid? You can get a bulkhead fitting that will seal tightly with a gasket and will give you an attachment point for the airline.
The extra surface area will produce more CO2, but it will still take a while to build pressure if you have a large headspace.
I drilled holes for the airlines, I have 4 in the lid which then attach to a smaller bottle and then to the bubble counter. I didn't do anything with the tubing when using 2 liters but since i had leaking trouble I siliconed all the airline connections.
I'll try the soapy water and see if I get anything.
Thanks for the tips everyone, I'll update when I try some stuff out.