Cossack1977
Fish Crazy
Tropjunky said:This is a complicated subject if u want to get into all the theory but basicaly don't buy a filer or pump and make it move water over the max head hight i.e. if it says max head hight or 4m then don't have the outlet more then 4m!
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Now when you mean outlet no more then 4 meters do you mean vertical height from pump or total distance from pump (vertical and horizontal)
my vertical height would only be at most 1 metre.