rb, You need to know how much water you needs to provide your plants through their life cycle (max water demand). You can do this by deciding the amount and then determine how many irrigation emitters or heads you will use. Each emitter uses up some pressure and flow. Emitter literature will tell you the flow rate for a specific system design pressure pressure. Add up all the emitters flow rates add 20% and that is you pump flow rate. If your system's emitters uses a certain pressure(psi) to give the flow rate you want then the pump needs to meet that pressure(psi) plus 20% plus vertical elevation difference(in feet) from pump outlet to flower beds times 0.5 for conversion to psi. That is about it, good luck. There is always trial and error. Look up 1/6 or 1/2 hp pumps. I would go will the larger size in case you want to expand. Larger flow rate pump just means shorter run time to irrigate. JMHO Aloha

When using a booster pump fed from an above-ground cistern, the storage tank klem1 refers to is actually the bell housing on the left end of your booster pump. I suspect the delay could either be due to a restricted intake line from the cistern tank into the pump or a worn/stiff pressure switch diaphragm on the booster pump that is turning the pump on too slowly.

Hello. Maybe something like this: http://www.gardena.com/ca/en/water-management/micro-drip-irrigation-system/ I am sorry for may very bad english.

I did a search on the forum and am now actually considering the 1.6 Watt pump from allsolarcentral.com. I keep calling what I want a fountain but forget that I'm just looking for a pump to create a similar effect. I currently have a much weaker version of the 1.6w that is what I want...just weaker.