How do I get water from one plant grow out tank to a tank that will be directly above it. The tanks are only like 2 gallon tuba wares. I don't have a small enough pump. Is this even possible?
Step 1 - Get a cup.
Step 2 - Scoop up water from the lower tank, dump it into the top tank.
Step 3 - Scoop water from the top tank, dump it into the lower tank.
Alternative Step 3 - Setup an overflow of some sort to drain down into the lower tub.
That's about all I can think of without a pump or some tubing.
get a hose for the pump, then get a bigger hose, use the bigger hose to sipon water from the top tank to the bottom tank. and use the pump to pump water from the lower to the higher tank, if you have too much water flow from the pump, tie a knot in the hose, need less water flow? tighten the knot, need more water flow? loosen the knot.