The History of Ken and Harriet's House

The History of Ken and Harriet's House ..... see the Blog Site: http://kenandharrietshouse.blogspot.com/

Aquaponics

Aquaponics ..... is the system whereby native fish are being used to produce an abundant free supply of organic vegetables with very little water usage.


From the website: http://www.backyardaquaponics.com/ ...... Aquaponics by definition is the combination of aquaculture and hydroponics. The beauty of aquaponics is that in the combining of the two they equal out the negative aspects in each of them. In other words, the sum of the two when combined is greater than the sum of the two individuals.
Nutrient rich fish water is pumped from the fish tank into gravel beds, where plants growing in the gravel extract the nutrients from the water. The water then drains back into the fish tank cleaned of excess nutrients and freshly oxygenated.

Imagine a system on your back patio, enough to feed the whole family. With no chemicals and no wastes, using about one tenth of the water used in dirt grown vegetables. You might be wondering where's the catch, but there isn't one!

See the hyperlinked websites at:


http://www.backyardaquaponics.com/


http://www.aquaponics.com/

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Aquaponics is my new major project I am about to start. I have initially laid out the system in white lime as two areas .... see the photos above:

1. Lower Fishpond: (2.50 metres across) .... up against some existing hugh granite boulders left over from a landscape job fifteen years ago.
2. The Upper Vegetables beds: marked as rows on the upper slope above the fishpond. The beds are 1.0 metre wide * 2.0 metres in length with a 1.0 metre wide brick paved path between each bed. The beds will be 35 mm in depth. The beds are filled with coarse gravel and nothing else.

A small excavator is coming soon to dig out the fishpond and the beds.Then a commercial vinyl pool liner will then be used to line the pond and the beds. The liner is cut to shape to fit the pond and each vegetable bed. When filled with water, a submersible pump will pump fishwater through pipes up to the beds and through the cleaning action the growing vegetables, return fresh water to the fish.

Fish can grown from fingerlings which can be obtained locally in a plastic bag (as you buy goldfish) ..... for 0.50 cents each. The fish eventually grow to table size in the fish pond. If they are bass, you can buy guppies which readily multiply and feed the bass. You can also handfeed the fish fish pellets.

The fishwater contains a lot of ammonia from the fish which would be toxic to them in the final end. The pump pumps fishwater through pipes up to the beds. Bacteria grows on the straight gravel and leftover root systems from former vegetable crops. The bacteria convert the ammonia into nitrates which are readily taken up by the vegetables. In so doing, the vegetables return fresh water to the fish.

In the vegetable beds, any leafy vegetable can be grown ...... growing straight in the gravel and water. You cannot grow root crops as it only gravel they growing in. The nitrates which are produced by the bacteria growing on the gravel surfaces are readily taken up by the plants. Nutrient level is greatly helped by the sprinkling a rock dust fertiliser like Alroc Minereal fertiliser which provide the growing plants with all the necessary minerals for growth.

You need to add about a matchbox full / square metre of vegetables every three months. You cannot add to much as it doesn't dissolve away. The bacteria just keep on breaking the fine rock particles down into minerals (about a 100 of them). Pest eradication is nil as insect pests only attack weak plants. See the hyperlinked website: http://www.mineralfertiliser.com.au

In summary, Aquaponics is the system whereby native fish are being used to produce an abundant free supply of organic vegetables with very little water usage.

Watch this space for future developments.

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The Blower

The Blower ....... we bought a new electric blower the other day from Bunnings Hardware down the road for &A100.00 only. The previous one was ten years and just went down .... the motor just burnt out. The new one is a Ryobi with an extended nose on small wheels for rolling along the paving. It blows and vacuums at the same time, all with movement of a lever that blows or sucks. When it sucks, all leaves and debris is sucked through a metal impellor which mulches leaves into a small size. When the catcher bag is full, a zipper on the edge is unzipped and all the mulch can be sprinkled on the garden.

Alternatively, the catcher bag can be taken off through undoing the binder cord and a very powerful blast of air can be directed out from outlet where the bag goes and the blower will quickly blow leaves and any dirt off paths in a matter of seconds.It is great for the big areas of paving around the house.

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The Herb and Vegetable Planter

The Herb and Vegetable Planter ....... I made this planter (3.00 m * 0.5 m in size) out of old recycled timber screwed together. I have this new wonderful 24 volt battery powered drill that can slowly drill holes through timber to the length of the drill. Then you can simply turn the chuck of the drill and simply replace the drill with a socket head to screw in hexagonally headed coach scews. If you want take the screw out, you press the reverse lever and the drill reverses out the screw.

I made an initial frame so that it had two internal frame supports. This then made three planting beds. Then I nailed an outside screen of vertical boards cut at random lengths to give a soft undulating edge. The three internal garden beds were lined and trimmed with plastic sheet to prevent moisture from the future compost affecting the timber frame. Seven wheelbarrows of compost from the big heap down the hill, were wheeled to fill the beds. Herbs (Chives, Basil, Coriander, were planted in one bed. Then several sprouted onions in pots, which I grown in pot several months earlier, were planted in the second bed along with two tomato seedlings. In the third bed were planted a rhubarb plant and several other tomato seedlings.

We had obtained the rhubarb plant from a plant sale very cheaply up at Toowoomba a week ago when we went up for the Carnival of Flowers. If we have our own rhubarb plant, we can obtain stems whenever we want to cook them. You cut off the leaves as the acetic acid in them leaves makes them toxic. We could only obtain rhubarb whenever we went up to Tamborine Mountain in the summer time. That was little erratic as it depended on us going up to mountain in the right season.

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