Hi, I am about to order a pump for my sump. I have a 30 gallon tank with a 10 gallon sump. I am wondering which pump I should get. If anyone could please take a look at these 2 pumps and let me know if they will work. Ive been told I need around 300GPH. also Should I just go with a Mag 3 pump or would these work fine?
How high are you pumping the water up to get back into your tank. If you are wanting 300gph at that height then the Mag3 will not work for you. You may need to go with a mag5. I don't know much about the pumps in the links I have MAG pumps and I love them they work very well. Look at this http://www.customaquatic.com/customa...ID=DM&catID=wp
Click on one of the pumps and it will give you the head height chart. That may help you out.
There are "head loss" calculators available online. That will help you determine the correct size pump you need to get the output you want at 4'. As I said it's better to be a little over than under regarding flow. Over is easily corrected.