doh. I just saw the part of your initial post about wanting to avoid touching it for up to 3 wks at a time. hmm....I still don't think that using fertilizer through a superfine nozzle is a good idea, because you're guaranteed to get some sediment in there. but perhaps a slightly less fine nozzle for the fert, and the mistking for the bulk of the watering? you can probably get away with minimal fertilizer, ie 1-2xweek, and this way your fertilizer hose will last longer.
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