What Filter For 450Litre

After looking into flow and the different factors in this tank I'm thinking of 2 x FX5's, a set of lily pipes on each but one set in the rear left corner and one set in the front right corner, that way the flow should be really good. In theory the place with least flow will be right in the centre on the tank and hopefully low enough for the discus to be happy and shoal there. Opinions please?

Secondly, I was thinking then placing the CO2 diffuser in the middle of the back of the tank so its pushed round the tank, obviously with a couple of drop checkers I can tell if it needs to be moved. Worst case I'll run two CO2 outlets from the FE kit into the outlets of each filter pipe so its already in the water by the time it reaches the tank. Opinions please?

Lastly, will the FX5's kill the TPN+ if it is sucked into the filters or will they just circulate it back into the tank?

Sorry for all the questions but spending this much on a set up makes me wanna get it right and I don't wanna stress the fish as Discus being Discus are sensitive. Plus if I get it right it should be one hell of an aquarium.

Hopefully lol.
 
Anyone think this is good circulation? Good ideas, oh and the TPN+ question, does anyone know if the filter will affect that as said above?
 
If you need good flow I would highly recommend a Sunsun flow/wave maker. I have a 5000litre one and it really gets the water moving around my 450 vision tank. One of the best things I ever bought, so good in fact that I am planning to get at least one more. Although if you are have small fish just be careful as it could potentially suck in any little un's.

This is where I bought mine from and think they are alot cheaper than the koralia ones.

http://www.allpondsolutions.co.uk/aquarium-1/aquarium-equipment/wavemakers.html
 
Been chatting to Ianho and I'm gonna go with 2 x FX5's I think, I want as little in the tank as possible really.
 
Been chatting to Ianho and I'm gonna go with 2 x FX5's I think, I want as little in the tank as possible really.


Was thinking the same for my 400L found alot of unhappy people the fluval so going ehiem for the extra , got cheap too many time only yo replace 6 months later
 
Ah well trial and error I suppose, I'll go with FX5's and if they fail I'll get 2 x Ehiems.
 

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