IBC Catchment with mains backup and some bells and whistles

I'm working on a project for a friend to set up an irrigation system for his garden from rainwater off his roof.

It'll probably be two IBC totes stacked on top of one another. I've seen mains backup systems as simple as using a toilet flush-fill system but I cannot find the links I found months back (oh, late-night research!). Though it would be great to keep the system for rainwater, a mains backup will allow my friend the peace of mind to be away for work for a week and not worry about his still-establishing forest garden. Has anyone put something like this together before?

Also, does anyone have any experience with using soaker hoses off drip irrigation? it seems a finicky process keeping adequate flow, especially if the tank is running low (also, hence the mains backup). I was also considering a solar panel hooked up to a dc bilge pump but more moving parts makes for a more convoluted process (especially when you don't know what you're doing.

What about timers? Are these possible to hook up?

Thanks in advance!

Frank

frank larue : Glad to help ! you are looking for The Thread '' Economical ways to pump collected rainwater to attic water tank " O. P. Michael Cox, I have 'bumped it up'
near the top of the cue of Threads in the Building >> Rainwater catchment Forum threads ! Also take a L@@K at the similar threads posted here, and also at the bottom
of the last thread extension ! Your thread extension will then be seen by every one who has already posted there ! For the Crafts ! Big AL
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