New System Question

[venturajm]

Hello, I'm new to the forum, and would greatly appreciate help from any fellow Aquaponics DIYers.

I have my two 25 gallon grow beds set up above my 50 gallon tank, but I have a couple questions before I add any plumbing or growing material. I'm not sure what's the best way to link the grow beds to my tank. Should I try a flood and drain system with bell siphons? That's the way I'm leaning based on what I've read on this forum and elsewhere, but then that means that my 50 gallons grow beds will nearly entirely drain my 50 gallon fish tank. Right?

Once I add a water pump, the water in my fish tank will be nearly depleted before my grow beds fill up and then drain back into the tank. No fish would be able to survive, right?

Would love some advice on what I should do next. Would like to add my fish in the tank this week.