Diffuser Bubbles And Inlet's

[LastBoy5cout]

My tank is starting to come together now and have fitted my CO2 system amd will be fine tuning it over the next few days.

Due to the tanks size ( 4 foot ) Im guessing I will need two diffusers at either end of the tank, one end has my filter intake at it and Ive read in the manual that bubbles going into the filter are a big no no, will a small amount of diffuser bubbles really wreak havoc with my filter? or will they help with diffusion

What sort of diffuser should i be looking at for either end of a 4 footer with a pressurised CO2 system ahev looked on AE's website but there is so much choice!

 

[SuperColey1]

Better of getting a single diffusor and making sure that the flow around your tank is good. Check out Jimboos 400 litre tank. One diffusor but a large amount of flow. This should give you some idea of what you are after.

I personnally sould suggest a Rhinox 2000 (ignore the tank size suggestions) and then either use filter(s) with output somewhere around the 2000lph area (assuming yours is a 55USG.) 10x flow is the suggested mark. Then play with your filter in and out positions and diffusor position until you find the best area for the microbubbles to be spread around the tank.

If you have a lower lph filter and you don't want to upgrade then you can always use a powerhead to give the extra flow (which is what I am doing) This can then be positioned to continue the flow (not go in a different direction) I use mine to point at the bubbles to force them around the tank.

Bubbles into the intake ius a commonly used method BUT there are suggestions (mainly from Eheim) that the O rings/seals can degenerate quicker if a sufficient quantity of CO2 enters the filter continually. Saying that many people feed their CO2 hose into the filter head via DIY drilled holes!!!! I personally don't take that risk.

The recommended positions for intake and outake are in the same corner as this means that the water does a complet lap from out to in.

Andy