With all of these objects you can easily set up automatic watering for your plants, a small comfort especially if you have a large amount of plants. Don’t forget to keep everything nice and clean so the micro-pipes don’t end up blocked, no algae grows in the tank and no rot begins appearing in the water. Happy growing!
Air pumps are used to give the water in your tanks more oxygen as well as keeping the nutrients in constant movement, which is something that your plants will greatly enjoy. You’ll need to place an air stone so the oxygen particles are smaller and easier to mix up with the water.
You’ll need a submergible water pump that can give out about 1000L/H per square meter of grow, which is about 16 plants. With this pump you can rest assured that you won’t be pumping too much water per minute, so there’s no need to worry about accidentally over-watering your plants. The minimum amount of time you can program is one minute, and make sure that in that minute no more than half a liter is being pumped out. You need to clean your water pump for every new grow to make sure that it keeps working perfectly – if you wait too long to clean it, it might get all blocked up and break due to the salts used in the water. Make sure to buy a quality pump, and not the first one that you see, as your entire grow will depend on this pump working properly.
These are trays that have grooves in them so that you can direct any leftover water to a specific point, where you can then channel it through a pipe to wherever you’d like or simply leave a tank underneath the hole on the tray itself so that the water can fall down into it. These trays are easy to clean once the grow is done and they’re very efficient when it comes to getting rid of water so that there’s never any leftover water sitting at the bottom of your pots and soaking into the soil. They’re also useful in the fact that leftover water from one plant has the opportunity to be absorbed by another plant, which can help avoid all sorts of salt excess in the substrate and whatnot. There are various sizes available to fit your exact needs.
Automatic watering is as easy as having at least a 2L tank per plant. You can even prepare enough water for a week, so the most you need to use is 1.5L per plant for 7 days – this is perfect as a week is about how long mineral nutrients can last in water without going bad – if you use organic nutrients you might end up blocking the pipes and you’ll also need to mix them every day as they won’t last more than 24h in the water without going bad.
There are all sorts of water tanks out there that you can use, although we recommend using one that has a lid if you’re growing with chemical or mineral nutrients, as they’ll last the full week and the water will be better conserved if it has a lid – there’s also less possibility of getting fungi infestations and algae that tend to occur when light hits the water- You can also use one of the square tanks without a lid and place it right under the table or inside a grow tent, which can save a lot of space. You need to pick the type of tank but you also need to pick the capacity – the most you’ll use per day is about 2L per plant once they’re fully grown and drinking the most they’re going to drink, so calculate that into about a week of growing and get the right sized tank.
If growing in soil you should only begin watering automatically when you’re sure that your plants are drinking a reasonable amount of water per day. In my opinion, I think automatic watering in soil should be used no earlier than when flowering begins, and in a 7L pot your plants should be drinking about half a liter of water a day.
The last thing you need to do is get an air pump with an air stone, which will ensure that the nutrient mixture and the water is in constant movement and oxygenized – your fertilizers won’t end up accumulating on the bottom and will always be available for your plants once the pump turns on.
You should have your system set up by now, but you still need to know how much water is being pumped per minute by the pump. Place a glass at the end of one of the drippers and turn the pump on for one minute with the timer to see how much water your plants will be getting per minute. Once you know that, you’ll know how long you’ll need to have it on for when watering. Generally, half a liter per minute is what most pumps give – if you get more than that then your pump is much too big – you need about 1000L/H per square meter of grow with 16 plants in each square meter for the micro-pipes to work correctly.
Automatic Watering for your Cannabis Grow – Learn how to set up automatic watering for your coco coir or rockwool slabs with this informative article.
The Ebb and flood method is a great way to water your plants but a little complicated to build. The way it works is already described in it’s name: It makes the water come and go (just like the ebb and flood in the sea). To make this work you need to be creative and have the right equipment.
When asking an experienced grower about hydroponics, they will probably be very positive about it. Generally plants that are grown using a hydroponics method will grow 30-50% faster and often gives you a bigger yield.
This images shows 2 different ways of “deep water culture”. You are able to place multiple plants in one big reservoir, or use smaller reservoirs for every plant. This is up to you!
In the end it will look something like this:
The plants will be placed in a longer tube thats is angled a few degrees. This tube will be placed above the water reservoir. In the water reservoir, there is an airstone and pump that pumps the water in one side of the tube. Because the tube is angled, the water will flow to the other side (using gravity) where it enters back into the water reservoir.
Now get yourself a pump and place it in the second (lower) water reservoir. This pump needs to fill the upper reservoir (that contains the plants) through the waterways described above. Because the reservoirs are on each other, the water will flow back to the lower reservoir once the pump is turned off. Using a timer, you can flood the roots of the plant every now and then without continously subermergin them in water.
In this picture you can clearly see how an ebb and flood system works: Image 1 shows the pump flooding the upper reservoir, giving the plant their water. Image 2 shows how to water drains back to the lower reservoir. This happens when the pump turns off. you also see an overflow which works like an extra security if the water rises too high. (in that case the water drains back to the lower reservoir)
- 1 big water reservoir
- Bucket/ basket pots for your plants
- 1 tube that fits your amount of plants
- Water pump
- Air stone
Add some nutrient mixed water to the reservoir and keep it +- half full. Then place a water pump in the water and connect it to the misters. Now install the misters in the plant-tube and make sure every mister is being placed underneath a pot, aiming directly at it. Now make sure you will install the plant tube directly above the water reservoir, as the damp will collect and eventually flows back as water (this water can be recycled by catching it back to your water reservoir). A great tip is to angle the plant-tube slightly so the water flows back on 1 side.
The growroom: Watering systems One of the most important aspects of a cannabis grow is providing your plants with (nutrient filled) water. As a beginner you might think that it’s just a matter of