Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Regular old gravel vac or whatever tubing you want. (A bit of sponge over the end to keep fish in the tank, out of the tubing)
Siphon downhill into barrel, garbage can, bucket...
Fountain pump to garden.
My property is slightly sloped. (2%)
From the house a gravity only system will only go so far, and nothing uphill (of course) and the flow is very slow when long runs of hose (tubing... anything) are used.
So I siphon close to the tank into a 15 gallon storage container, clean the filter in that, then pump it to wherever I want in the garden, moving the hose as needed. I use a fountain pump rated at 300 gph with no head, I have no idea how many gph it is moving with 50' or so of hose, and not too far off level. But it is fast.
I use the same equipment to harvest rain water, moving pump and hose to each rain barrel.
To use a Python to do this I would imagine you need to hook it up to the faucet to get the flow going, then redirect the output to the garden. Can you hook it up to a hose bib so it is already out in the garden?