I hear a lot of people on the forums talk about how fast they can change water using a Python and how great it is. But I think using a submersible pump and quickly gravel vacuuming is the best and most efficient way to do WC's.
With a Python, you waste so much water from draining the tank. If you turn off the water pressure, the suction gets pretty slow for most people. Last month, I started using a spare submersible pump, hooked it up to a 75 ft. garden hose to run to my lawn and I did a WC much much quicker than I ever did with a Python. For the little bits of fish poop left in the water, I used a regular siphon to gravel vacuum. I noticed that my water bills were a lot lower since I started using a pump to drain water because of less wasted water during the Python siphoning.
If you've got a spare pump, I'd recommend using it to do water changes instead of a Python. It's a lot quicker and will save you money.
With a Python, you waste so much water from draining the tank. If you turn off the water pressure, the suction gets pretty slow for most people. Last month, I started using a spare submersible pump, hooked it up to a 75 ft. garden hose to run to my lawn and I did a WC much much quicker than I ever did with a Python. For the little bits of fish poop left in the water, I used a regular siphon to gravel vacuum. I noticed that my water bills were a lot lower since I started using a pump to drain water because of less wasted water during the Python siphoning.
If you've got a spare pump, I'd recommend using it to do water changes instead of a Python. It's a lot quicker and will save you money.