small one drained back to the tank

[drain]

Ron i did a 6 site garden now i got a 40 site one here's my question the small one drained back to the tank fine the new one with more water to drain back takes lots longer do you think i have a problem should i go to bigger pump with larger hose i to am looking for a timer that doesn't run so long let me know what you think thanks Ron

[Ron]

The smaller garden will have to remain circulating until the larger garden fills to the correct height. Or put a flow control valve on the smaller garden to slow the water until the larger garden fills. You can also put two pumps one to each garden in one tank of solution.
I also use one cycle timer for ever garden in my greenhouse by setting it to fill my largest garden to the correct height. And then I put a flow control valve on every smaller garden to slow the fill up time to match the largest one.