I have created aquaponic system and tried to plant tomatoes, cucumbers and some other herbs. They sprout without problem but after couple of days they dried out. I tried it 2 times with the same result.
The water circulates 15 min every hour. I'm not using siphon setup but water flow one. At the bottom I have a gravel to filter it and at the top I use clay pellets in which I seeded the seeds.
The white drain pipe goes up to where the clay pellets and the gravel meets. So the seeds are not constantly in the water but absorb the moisture from the pellets. Any idea how to make it work? I'm planning to give up and just to plant some flowers meant for ponds.