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Old 11-07-2018, 11:50 PM #1
Aheadatime
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Working With Dosatrons

Hey all, was wondering if anyone could help with a bit of confusion I have about the dosatrons. I'm basically confused as to what happens before the water gets to the dosatron. City water > RO filter > reservoir is obvious. Then what? Do we need a timer/irrigation controller if we are using a dab pump? I'm not sure what a dab pump is to be honest, but it seems to be recommended hand-in-hand with dosatron units. I'm only familiar with sub pumps, ball valves, pvc, etc., smaller scale sort of stuff. Anyone help me piece together mentally what a system would look like with a dosatron in place?
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Old 11-08-2018, 01:03 AM #2
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I have never heard of a " dab" pump. I have posted pictures of one of my doser manifolds on here somewhere. Dosers are powered by the pressure in the water line. If you skipped the RO You could do city water > doser With no problem.

The reason you would need a pump is because you are ro filtering into a rez. You just need a pump to get water out of the rez with any pressure.
Tell me more about what kind of flow you want, how big the garden is, what type of irrigation you want to use, and i can recommend a pump.

I can also help you design a pvc manifold for the doser. And a timer/valve setup of you want it to be automated. I know this sounds.sort of complicated, but it's not at all. And it's not expensive either.
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Old 11-08-2018, 02:52 AM #3
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I just googled "dab pump". It's just some gimicky overpriced booster pump marketed for weed. I would never consider getting something like that.

I mean, there are REAL known pump manufacturers that make pumps that last 30+ years that cost less.

Booster pumps are just pumps that have a built in pressure switch. So you turn on a faucet, and the pump turns on automatically. Chances are if you aren't commercial and using less then 500 gallons a day, your pump should only be 50-100$.

I have gardens that use 4000 gallons a day and the pumps were only like 400$.
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Old 11-08-2018, 03:31 AM #4
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What a helpful post! I'm designing a setup for a larger scale situation involving multiple 30k watt rooms. Lets start by assuming 2 30k rooms. Scaling up from my smaller grows, each room would have 120 pots (coco) being top-fed via 2 lines each, so 240 'sites' total. Each plant between .6-1 gallon/day means maximum .5 gallon per site per day.

My smaller grows use Mondi pumps with this timer;

https://www.superfeederstore.com/acd...&utm_source=bc

..which is nice because it gets down to the second. Feeding through simple pvc manifolds with a ball valve per site, mimicking this setup;

https://www.youtube.com/watch?v=gRQXE_-YpUw

For the larger rooms I'm designing, I'm attempting to understand/mimic this setup;

https://www.youtube.com/watch?v=E031bt5A7LU&t=230s

..which seems to be a universal way of designing larger grows, be it miami.mango, jungleboys, hisandhergrow, etc. Not many people show their pumps/timers/controllers, which makes understanding the setup tricky in regards to the minute details. I have a general understanding that works like this;

City > RO (a must-have for me) > Pump/Timer > Dosatron > Feed Lines

Confusion with a larger scale setup involves;

- Getting equal pressure to each line
- Correct pump/timer/controller sizing
- Ensuring customization of feed volumes in multi-strain situations
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Old 11-08-2018, 03:33 AM #5
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Forgot to mention, the dab pump was just something I caught onto when looking into larger setups. If it's unnecessary and overpriced, I'm cool with saving money! I've no attachment to any particular grower or piece of equipment. I'm into learning and designing, tweaking and changing all the time.
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Old 11-08-2018, 11:04 AM #6
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It's kind complicated. There are allot of different ways to skin a cat. We should really have an irrigation section or at least thread. I guess all the info on here is really for small indoor stuff. For warehouse sized grows you do irrigation more like you would a greenhouse.
Basically you would want a manifold with a couple dosers. A bunch of valves. You should look up 24v sprinkler valves and controllers online. These are what they use to turn on underground sprinklers or irrigation by timer.
Watch a youtube of how a fertalizer doser works. With your valves you can route it through each doser or skip all the dosers and just do plain water. All a doser needs to work is water routed through it.
You need a sprinkler controller for your doser setup and you need another controller for your irrigation zones. Each irrigation zone can be fed or watered differently. All your controllers do is open and close valves. The pump comes on automatically when a zone valve opens. Your water lines stay pressurized and when valves open, the pressure drops and the pump kicks on. The pump stays on until the valve closes, Pressure builds and the Pressure switch kills power to the pump.

This stuff is not expensive. The only thing that is a specialty item it's the doser. Everything else can be gotten from a good hardware store.
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Old 11-08-2018, 02:04 PM #7
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You should make sure to have a ball check valve in the inlet side of your dosatrons to prevent backflow.
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Old 11-08-2018, 09:10 PM #8
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It should be a swing check on the outlet sides of the doser to prevent backflow and a check on the inlet of the pump to keep the lines pressurized.
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Old 11-08-2018, 09:27 PM #9
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Crushn- how many booster pumps do you usually recommend? I've found one for every 2000 sq ft or in the middle of 8000 servicing four areas to be totally adequate. This was without swing checks or backflow prevention if memory serves.
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Old 11-09-2018, 01:38 AM #10
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You only need 1 good pump per PROPERTY because you can split it into zones. I have one property with multiple gardens across over 20 acres. Every corner of that property has pressurized water that can be injected with fertalizer flowing at 15 gpm. I laid over 3000 feet of pipe there to get to gardens.
There is one well. One set of storage tanks. One irrigation pump. One set of dosatrons all in one convenient location. There is a greenhouse 40ft away and one 1500 ft away and up a hill. One pump does everything.

The right pump can do whatever you want. Average submersible well pumps sit hundreds of feet underground.
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