The next day, I went and inspected the work I completed the day before, only to find a small puddle at the bottom of the 100L water butt that I had sat on the ground. In my haste yesterday, I had bent the tap and the rubber grommet was not forming a seal. I lost about 25L during the day.
I decided to fix it up straight away, but as I was unable to lift the 100kg of water, I had to drain ¾ of the butt into the veggie patch before I could disconnect it. I found a very large terracotta pot with a crack in it, so I turned it upside down and used it as the base for the water butt which gave me a little more pressure from this butt and it is now above the level of the garden beds. I fixed up the tap, stopped the leak, and made sure that everything still worked. All good for now, and no more leaks.
I then tested the solenoid. I removed the 19mm plug that I had put in the end of the main line and started to manually start each of the stations on the automatic control panel. It took a while, but I figured that it is station #2 and the solenoid works fine. So far so good.
I then cut the main line level with the top of the garden bed, put in a 19mm elbow joint, and then inserted a 19mm in-line filter to ensure that no dirt from the rainwater tanks would block the drippers when I start the system. I then put a 19mm in-line tap so that I can fill each butt from the main rainwater tank, and so I can isolate all the garden beds with just one tap. It was just on sunset, and by this time I had an audience with Kim (my wife) and Amy (my daughter) watching me lay more 19mm pipe across the back of each bed. Amy decided to help me out, so she became my girl friday and handed me clips and nails to hold the pipe in place so that I could fasten the pipe to the wooden garden beds. At the end of each bed I put a 19mm to 13mm T piece so that I could start the next stage on the following night. I finished the main line for four of the five beds before I ran out of 19mm hose clamps so I stopped for the evening.
I laid the main 19mm line all along the back of the veggie patch beds, and inserted a 19mm to 13mm T piece so that I rig up the piping for each bed. This is what it looked like before I started work. When using harvested rainwater, make sure you put in an in-line filter to stop your drippers from getting blocked. Some silt may get into your tank so this is a simple precaution to avoid having to purge your system everytime you inadvertently put dirty water into the pipes. Here is the filter setup;
Here is the mainline with the T pieces inserted;
So, I began by making a set of isolating taps for each bed which were all 13mm fittings. It was a little bit fiddly, but once I made one, I managed to bang out the other 4 very quickly. This is the mainline isolation tap and the secondary tap assembly for one of the beds;
Then I put in a secondary line of 13mm pipe, down at the level of the soil, and then ran a few tertiary 13mm line down the length of each bed and used Moss Inline 13mm drippers where there was a plant. This is quite easy to do, but much simpler if you lay the pipe and drips before planting. You can get to all the bits without damaging existing plants. This is the first garden bed completed (tomatoes, leeks, and red onions);
The second bed with three tertiary lines (zucchini, cucumber, and eggplants);
The third where I used 4mm
Drip Eze by Pope irrigation systems (click the link for an installation video). 20metres cost me about $25 and I still have about half of it left over. Each drip point in the hose releases 2 litres per hour (click photo to enlarge);
The fourth bed (tomatoes) where I used the inline 13mm drips;
And finally the fifth perennial bed;
After all the beds were completed, I got stuck into putting in 4mm lines with little taps for each of the fruit trees in pots. I used the lasso method, where you use Drip Eze to make a circle around the tree all joined by a 4mm T. This method give you about 4 drips per plant and cover the entire root zone. This will make it easier to water the potted trees and I will still be able to isolate them if the need arises;
I gave Kim the grand tour, and tested each bed to make sure everything worked without any issues. As I had reused old 13mm poly pipe that I had kept from old installations, I had missed one hole that I missed during installation, but quickly fixed it up with a bit of black silicone and a goof plug. All sorted and each bed worked fine. Then I turned it all off, because the beds were already damp from all the rain we had.
With all that finished, Ben helped me to planted up the empty bed with some mixed lettuce, spring onions, and celery seedlings which should all grow like crazy (which they did!), now that I can irrigate straight to the root zone. I then showed Ben how it all worked by turning on one of the 100L water butts and turning off all beds except for the newly planted one. He was absolutely fascinated and wanted me to check every single dripper to make sure that our plants were getting watered. It was all working as designed, with both of us being quite thrilled to see it all working. I then poured about 2 litres of worm wee into the 100L water butt we were using so that the plants would not suffer from transplant shock. The beauty of using these small water butts is that you can add organic liquid fertiliser or soil conditioner and you will not contaminate all of the other water tanks/butts. Also, by using the 100L water butt, you can water 2 beds at once and just let it all drain overnight until empty. That way, you will not forget to turn off the tap if using your main tank.
Over the course of an hour and a half, the Drip Eze bed only used 50L, which I thought was good, as each of the seedlings were well watered in. I then turned that bed off, and let the remaining 50L water all the fruit trees and the rhubarb and loganberry bush.
All in all, the entire system of Drip Eze line, Moss Inline drips, T's, elbows, ratchet clamps, taps, filter and end stops cost me about A$160 in parts (I still have about $40 worth of bits that I didn't use), the 2 x 100L water butts were $59 each, with the 200L water butt and stand costing $110. All 19mm and 13mm pipe was free because as I mentioned before, I used poly pipe from an old system. I still have about 5 metres spare just in case I need to connect up the new tank that we are saving up for.
It was great fun, and I have an overwhelming sense of accomplishment by doing it all myself. Once I put my mind to it, there is I can achieve anything (well almost)!
