Fluval FX6 - New Install - Questions and Advice
My two Fluval 406's on my 75 gallon CO2 injected tank keep spitting out microbubbles. I've replaced every single user serviceable part from impellers to hoses to valves to o-rings and I still get bubbles. Tiny little bubbles which ordinarily would be fine but I suspect they are knocking CO2 out of solution and causing me to have CO2 swings which is causing me headaches with the algae, particularly BBA. I thought I had them figured out but they have returned and I am about done with them. If I didn't have CO2, I wouldn't worry to much about them but I do, so I do.
Picked up a single FX6 for a sweet deal ($240) at PetSmart last night which should fit the bill as far as GPH and flow and whatnot. I was looking at replacing the heads of the 406's for $99 each off eBay but that's $200. For another $40 I get a new filter that is pretty good from what I am reading and slightly better. Plus I can unload the 406's and make up some of the difference by selling them used. I am still on the fence because I REALLY like my setup but I am REALLY tired of the microbubbles...
So, back the the FX6. I want to split both the intake and output so I can continue to have an intake at both corners and an output at the 1/3 and 2/3 mark in the tank. I have a Rex Grigg's style CO2 reactor inline on the outflow of one of my 406's. So, my questions and advice sought are:
- Should I not worry about the two intakes and two outlets and just have one of each? Is it overkill to have two?
- If I do split it, should I just do one intake and two outlets or one outlet and two intakes or two intakes and two outlets?
- If I do split it, was thinking that going from the 1" ID tubing down to two 3/4" would be just fine. Agreed?
Anything I am not thinking of? Thoughts? Thanks for the advice!