Hi i am going to get an arcadia series 4 mini 150w metal halide for my soon to bee 26 gallon nano. The unit is 55cm long and the tank itself is 81cm long, will the halide be big enough or am i going to need more lighting for the whole tank? Also i am going to buy a schuran oveflow box that has a max rate of 2000l an hour. how do i find out what pump is right to push back up 4ft to the tank and also if the flow back into the tank is 1000l an hour will the flow down into the sump also be 1000l an hour or is it going to drain faster than its refilled?
Help With Overflow And Lighting
- Thread starter James42a
- Start date
ox5477
Wet pets make the best Pets
As long as you keep the corals in the center of the tank, then there will be no issue with the short length of the fixture.
All pumps should have data for flowrates at specific "head" or the vertical distance your pushing water. For sizing it, make sure it is less than the 2000L overflow. The reason for this is that if the pump pushes more water than the overflow can return, your main tank may overflow with water cause it can't flow back fast enough. With the overflow having more flow than the pump, you will have a certain level of the main tank that the overflow will stop sending water down to the sump as the level becomes to low. So as the pump pushes water up, the overflow will flow back as much as the pump pushes back. This is also good protection for a power outage... because even if the pump loses power, the overflow will only send a certain amount of water down to the sump before the level becomes too low
All pumps should have data for flowrates at specific "head" or the vertical distance your pushing water. For sizing it, make sure it is less than the 2000L overflow. The reason for this is that if the pump pushes more water than the overflow can return, your main tank may overflow with water cause it can't flow back fast enough. With the overflow having more flow than the pump, you will have a certain level of the main tank that the overflow will stop sending water down to the sump as the level becomes to low. So as the pump pushes water up, the overflow will flow back as much as the pump pushes back. This is also good protection for a power outage... because even if the pump loses power, the overflow will only send a certain amount of water down to the sump before the level becomes too low
If you've got an overflow rated at 2000LPH and 4' of head on the return pump, you could prolly get away with a pump that is RATED for up to 2500LPH. I wouldn't go for a pump RATED for less than 1500LPH, might cause the overflow to gurgle excessively with too low of a flow
ok bearing in mind whats been said i have looked at pumps and i like the ocean runner 2500 wich has a head height of 8.3ft. am i right in thinking that at 4ft the output will be halfed making the flow back into the tank 1200 ish liters an hour? also the bulkhead on the schuran overflow is 32mm would it be easier to use pvc or regular hose?
Yeah, the pump curves are pretty linear, so an OR2500 would probably put out around 1200lph, maybe err a little on the higher side of that, closer to 1500.
Use whichever hose is more convenient for you
Use whichever hose is more convenient for you
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