System is indoor.. consisting of 8 Five gallon buckets.. 7 have 6 inch net pots for the vegetable. All 8 are tied together with 1" PVC bulkhead fitting through bottom of bucket. Float switch in 8th bucket will trigger
pump draining of the buckets into an elevated 55 gallon drum reservoir. Gravity drip nozzles will fill the buckets.. planning on a 4-6 hr cycle.
Cost tradeoff was about the same but the airpumps are noisy and most look like they wear out a lot.
Need a good float valve to make sure the buckets don't overflow if the pump fails.