Davo86
Cichlids, Catfish and Oddballs
The tank is the c-Dream B1200 with the footprint - 122 x 44.5 x 76.
Also i currently use a fluval 405 external filter + a 90litre per hour? internal filter with powerhead....
I am thinking to remove the internal and replace with my spare fluval 305 external to get some good overfiltration
to be honest you don't really have anywhere near enough filtration for a tank of that size,
the filter guideline of upto 100G isn't what you want to go off
409Litres tank
851LPH +90LPH = 941 LPH in total
gives you 2.3 X turnover per hour, For any setup the minimum you want to be aiming for is 5x turnover, and more if your keeping messy fish,
even with the 305 (700LPH) on top of the other two, you only are running at a 4x Turnover