I am also planning to start CO2 on my 75. I am interested to know how your project is going. Please keep us posted.
The regulator doesn’t have any reviews on Amazon. I am definitely looking forward hearing from you about it.
Yeah I knew it was going to be a chance buying a regulator with no reviews but I figured with Amazon I can always return it. If there are issues after the return date I am only out $25.00... Cheaper than anything else I have on this tank.
So here is my topic of discussion now. A reactor works by routing water and the CO2 bubbles through a chamber that has an impeller or a bunch of bio-balls to allow more contact time between the CO2 and water. That's easy enough and I even have a T between the pump and the tank. When I was running saltwater this is what I used to push water over to the refugium.
But in thinking about my current set up I am starting to wonder if I have another solution. An easier one...
My tank has a 60 gallon sump in the stand. The bean animal overflow spills the water from the tank to the sump where I have filter floss around the overflow outlets, and then a mesh bag of bio-balls. Then I have a Mag 7 (or maybe 5) that takes the water from the sump and back up to the top of the display tank.
Here is the mag 7 pump I am talking about.
See the impeller cover with the input collar on the side. I was just thinking... What would happen if I drilled a hole in that collar and put in an air line barb and connected the CO2 line to it there. That way the CO2 would be mixed with the water as soon as it enters the pump, goes through the impeller and then up the line to the tank. So besides being mixed with the impeller the remaining bubbles in the water would remain in contact with the water up to the tank. The return line is a hard 3/4" PVC with a couple bends in it and the is around 5' of line to the tank. Seems like it would have more contact time versus just going through a 12" reactor.
I also have the option, for testing at least, to use the "pre-filter".
I could drill a hole in the back of the pre-filter and put the air line barb there. That way I would not be drilling the impeller cover and taking a chance of getting metal into the pump. I would make sure the CO2 enters at the bottom of the pre-filter and then it would have no choice but for the bubbles to pass in front of the pump input.
So how does this sound to everyone? Anyone done their CO2 this way?