Oh, you could definitely grow herbs and spices this way in the space of a balcony. It only takes a couple of fish and a small aquarium. I would suggest again
backyardaquaponics.com for some good reading in their forum. Lots of helpful people, some with jobs in this career. Herbs and lettuces are the easiest to grow, and can be partially harvested repeatably. I didn't even know that you could just go out and grab a salad and leave the rest of the pant like that. Now I should have done some lettuces in mine. Oh well, spinach is coming so on to the latest about the system.
Well, Sunday I finally went to get new plants, since all the others (minus 5-6) had died. I found some really nice ones, but they were quite a bit more than I expected for just one plant in some cases. Tomatoes and more yellow and green squash for the most part, but I also found nice habanero and tabasco plants. Now, my plants all look nice and no worries of shock. They drooped yesterday during the hottest part of the day, but once revived by a glass of pond water they perked right back up.
Then, I noticed my fish all swimming on the surface trying to breathe. Thank God I had all the stuff to finish the final bio-filter and aeration unit. These fish were on the verge, I feel. They haven't been eating except on rare occasion, so I have been worried. The grow-tubes haven't had a heavy enough flow of water/plants to chemically change/remove nitrates. So, I feared a rise in the pond's ammonia and nitrite levels. I hurried and built a really cool biological filtration unit.
Because of the need for a little more water in my grow-tubes, I have tinkered around with crafting a "geyser pump." Well, that may have changed yesterday. I have all the parts for the geyser tests, but this next project was just so simple when it hit me.
I wanted to build another bio-filter, but I did not like the idea of dumping all the rocks on top of my garden fountain pump. I didn't have a hole saw, drill, or anything else with the exception of my Scout knife. I looked at the pump, which had a bulkhead fitting staring at my face, and thought VIOLA!!! I will put the pump on the outside of the lid and thread down the protection screen as a bulkhead fitting. Now I could cut slits in the bottom of the bucket, and fill the bucket completely with gravel. I left a hole on the gravel just big enough for the lid to be able to smash and lock down. The bucket was a 5 gallon like HD or Lowes with locking lid w/ o-ring. I sunk the bucket in the pond, threaded on my garden hose adaptor fitting extra-hose (from when I stripped it for a mash screen for brewing), and added a Nylon 1/2" nipple X 1/2" threaded fitting to the end of the mess. I did this to later add a threaded "Y," and "V" the water in two directions (one into the pond to clean and circulate, and one into the supply line for feeding the grow-tubes).
While trying this newly completed contraption, it wouldn't stay waited down and kept rising to squirt water out of the pond. It also had little to no aeration for something so powerful, so I thought "Venturi device." Wouldn't you know it, the 3/4" X 1/2" "T" slips right over the hex on the Nylon nipple. This allows me now to use 6" of 1/2" tubing as my air inlet, and as a weight holding down the spray-rise at the end of the hose. Plugged it in and man are those fish happy. Tons of aeration, motion, filtration. Now, to hook it to the beds. Me thinks a ball valve is in order for the feed supply to the beds, this pump is pretty powerful.
Can't wait, I will take pictures and post more stuff later on. Looking out my window right now, everything is A-OK!
