Pump size for 30g long


New member
does anyone think a MAG5 would be a good size pump for this size tank ? The return would be around 3.5' high (head?).
What size mag? The 3.5' headfeet is what will determine the size. Look for 4-8x tank turnover for waterflow depending on what is being stocked.
If you want a CL system it will work as long as you use a few returns or spraybar type setup. Or you could use a wavemaker hooked to some powerheads to make up for some lost flow.