I'm currently growing in DWC and always get great results with this method.
Just make sure your pH and nutrient levels stay on track. Keeping in mind that any nutrient imbalance can bring instant problems, although, this also works the other way around in that, If you catch any problems, you can almost always correct them (also instantly) before too much harm is done to your girls. I love always having access to the root system. This method also allows you this kind of freedom.
I use 50% #3 Perlite and 50% Rockwool chunks
Air stone in each 5-gallon bucket. Simply keep them filled to your fill line making sure roots are wet.
I keep a 55-gallon container with my final nutrient solution already mixed, air stone, and a large mixing pump running constantly (I use this to keep all other buckets filled to fill line).
lease a warehouse and buy 1000 auto dwarf clones. In 10 weeks you will have 100,000 dollars. Invest in lighting and cooling. Also time to trim all those buds.
You don't buy auto clones. You know why? The clone is the same age as the mother. It will continue to flower.
You can't clone autos. You can but its pointless because you can't veg them.
Buy auto seeds and it would work.
Anyways about the fish water. I have a 55 gallon aquarium that I got tired of having to use chemicals. I zip ties some vines we had growing in the house. I haven't done anything to it in over a year except add water ass needed. Change the filter periodically.