I know this is not an aquaponics solution but it does work

Here is what I am doing and it seems to work wonders!
items you need
2 5 gallon buckets
1 lid
electric screwdriver
sharp pocket knife
Small clay pot with hole

first bucket you cut/drill a 2-4" hole in the center of the bottom of the bucket (size depends on the opening of your clay pot)
take the second bucket and place the clay pot in the center if the bucket
set the second bucket inside the first and position the pot so that it is directly under the hole.
look at the bucket thru a strong light to find where the bottom of the second bucket is inside the first.
When you find that spot you will drill a 1/4-1/2 inch hole for drainage and oxygen admission
Fill the inside pot with compost, potting mix and vermapost till full.
Cut a 6" ring out of the center of the lid and place the lid on the top bucket.

Plant your tomatoes in there and water every couple of weeks with your worm tea.

You do have a second option

take a bucket and place a hole inside it just large enough to cram a piece of tubing into it.
Fill the bucket with rocks or gravel
take a second container and keep your worm tea there, place a small pump inside this bucket and if possible position it below the level of the gravel bucket.
Set the pump on a timer to flood the bucket to your desired level how ever many times a day you wish.
the pump will flood the bucket and when it shuts off the solution will drain back into your tea container. I use a similar system with my in ground baby pond to grow my veggies in my garden instead of the ground. We have way too many varmints here that will quickly eat everything tender that grows in the ground!