Would you be interested in putting a few solar panels on the roof? I'm trialing a 100w dc system, yet to get battery's but I can pump 1000l/hr 2m high then gravity drain back to sump for about 6hours per day atm. With a battery hooked up I can do this 24/7. I think solar sheds are the way to go especially for fish rooms.
Kurt, I'm living in Erskine now so if you need a hand with anything give me a hoot.
Ps I could loan you a panel to trial if you like.
- KurtFreitag likes this