Hi All. I have 5 x 500L/h power filters running on my tank and they are having there last days. I wanto replace them with a canister filter. My tank is only about 100-120 liter. So far I have looked at the following: Fluval 104 ( 480 L/H ) - R 750.00 H20 Cfs ( Square design ) ( 600 L/H ) - R515.00 Dophin ( 900 L/H ) - R600.00 Cascade ( 700 L/H ) - Still looking for pricing Any body have any comments on these 4? Any other suggestions? How many L/h would be fine on my tank ? Keeping in mind that I dont want to create a river and blow all my plants away. Looking forward to your response! Jacobus