The SIP system is great but if you want a watering system that is a "set up and forget it", use a drip system with a timer...if you have 10 or less plants, you can set a system up with a timer for less than $50....about 30 for an inline timer and about 20 for a "10 drip kit"....I know this is not bottom watering but using 1 gph drippers and a timer you can set the amount of water the plants get down to ~ 2 ounce increments (128/60)...this is the way I am set up and it is completely worry free...the older I get, the less work I want to do...
everyone has to figure out what system works best for them and their needs whether it's hand watering with a hose on up to full automation of the system...
no thread hijack intended, just trying to suggest an alternative...