Sorry if this has been asked 1000 times. I just bought a 75 gallon tank that I want to set up for saltwater. I'm really new to non-canister filtration. So far I believe I need to have the tank drilled. What overflow system do I need to install? Do I need one on each side or is one enough? Please help!
Overflow for 75 gallon tank.
- Thread starter Jordan11586
- Start date
How many, or how large a diameter of overflow is determined by how much water you want (or need ) to pump.
This is determined by the kind of stock you want to keep.
If you want fish that come from wave action areas with lots of water movement you may need more than if you keep species from more placid areas.
This is determined by the kind of stock you want to keep.
If you want fish that come from wave action areas with lots of water movement you may need more than if you keep species from more placid areas.
For your overflow, use the first column(gravity) this will decrease if there are any elbows. It's a good idea to go with larger diameter than what you need as a failsafe
Column 2 is rhe normal amount of flow you can expect to achieve with a standard pump....column 3 is the maximum amount of flow you can push thru a pipe
Yep
To add a little more, you can see that column 2 states that it is for flow at 40-100psi, which is probably where a lot of pumps fall in the pressure zone. Column 3 takes the max pressure of the pipe (sch 40 pvc) and tells you what flow you can achieve if you have a pump that can pump up to that max pressure. If you had a chart for steel pipe, column 1 and probably column 2 would be pretty much the same. However, steel pipe can hold a LOT more pressure than pvc so you would see column 3 skyrocket. Column 1 and 2 are useful for us in the aquarium hobby for the overflow and return properties. Column 3 is useless to us because we will never have anything that high in pressure.
Sorry to go off topic but for steele pipes wouldn't there still be a difference between column 1 and 2 given 1 is gravity and the other pressured?
Back to PVC for OP, so if a Herbie drain was used, would he be looking at column 2 most likely?