It's been just over 5 years since we started our aquaponics project. In retrospect, I'm glad we did it but I'm not honestly sure of it's value in a sustainable system. These are the challenges I've struggled with over the time we've had the system.
Forums and email lists
If you are interested in adding an aquaponics system, I'd recommend spending some time on this forum. The people on the list are extremely helpful and have a great sense of humor. Be prepared to disappear into the site for long periods of time. The site is based out of Australia but there are members from all over the world.
Building and running an aquaponics system is an adventure. We've had a lot of successes, a few missteps, and a lot of learning along the way.
55-gallon blue barrels buckle
They seem to be an inexpensive way to build a system, however, they have challenges. The buckling means you need to build a good structure to hold them.
The water in our aquaponics system has been warming over the last few weeks as spring finally set in. Every few days I look into the water to see if there is any sign of tilapia fry in the tank and this morning, there were. I madly scrambled around and created a home for them. I made a square out of PVC tubing and elbows so it would float and then put that around a pond plant pot to secure the fry from the big bad adults in the system. So far, I've only found three little ones, but I'll keep watching and adding any more I find into the containment area.
Two years ago we built a solar greenhouse. The beauty of the greenhouse has been fresh tomatoes in January, a quiet place to escape and a learning space for gardening and nature. This year we decided we would add an aquaponics system to the greenhouse.
I spent the day in the greenhouse yesterday, cleaning up the aquaponics system. It is amazing to have plants growing lushly in November and finding lots of ripe peppers and tomatoes. They do seem to love the environment in there.
We've taken a number of steps this winter to assure the health of the fish in the system. Now, I must admit, we seldom get this much snow in winter but it certainly makes the point.
The Joy of Washing Gravel
In the life of every aquaponics system comes the day to wash media to go in the growbeds. We decided on a two layer approach though we know the layers will become somewhat mixed over time.
Plumbing an aquaponics system is based on a large number of factors and very few systems have identical plumbing. I will describe what we did and how we came to the decisions we did. Over time, if we find we need to make adjustments we will include those as well.
The Journey Begins
Our first step was to dismantle the grow bed we had in the greenhouse and clear out all of the plants. The plants have found a temporary home in our dining room. I dug out the two broccoli plants that were still happily growing in and potted them. They will eventually end up in the new aquaponics system. The huge tomato had to go. There was no easy way to move the tomato but I'm sure it will be replaced by an equally huge one in the new system.