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Your test rig wouldn`t look out of place in an operating theatre :)

I doubt you`ll get them on a sunday, best make the most of your day off ;)

Nice roots TF :)

The main differences are in buffering capacity (for PH stability) and the N source. Soil nutes use a higher percentage of urea and ammonia whereas hydro nutes use mainly nitrate. Hydro uses higher quality chelating agents to maintain the availability of trace elements over a wide ph range, soil...

Where i`m located you can have anything custom formulated by an agri company as long as you order a minimum of 1 metric ton. You`re only talking $3000/ton, which is nothing to a nute company. To put it into perspective, a ton would make about 530,000gal of nutes with an ec of 2. Close to what an...

Here are the numbers for GH Flora using 5ml GMB per us gallon just for an example. The dry nute profile uses 3.1g by weight per us gal to provide an equal value of "P". GH N: 110 P: 39 K: 137...

It looks like a dry nute designed for agricultural use, my guess is its a commercial hydro tomato formula. They do omitt the calcium for a few reasons. The source water provides some calcium but generally not all of it. The amount of N in the formula is also purposefully low to allow room to...

Technaflora PH Down contains 12% nitric acid, 1ml/gal will add 7ppm/gal of nitrate (NO3). I use nitric acid (38%) in preference to phosphoric acid as that adds more P per ml/gal than the nitric adds N. Excessive P can cause more issues than a little extra N. I found i needed to use more...

If you measure it you`ll find it`ll be a lot more, theres little point in referencing the nozzle flowrate unless its accurate :)

Using your posts as a guide to plant size, 6 sites per tub, 4 nozzles (0.9gph) for flow but you may need 6 for coverage depending on the pattern and throw. Nozzles are always the biggest variable because you never know what they`re going to do until you hook one up and test it at your normal...

It depends on the pattern and throw distance of the nozzles but usually the bigger the better. One large chamber is better than a lot of small ones.

ahh.. i didnt realise you were using posts. I`d be tempted to reduce the number of solenoids to one per post as the cost outweighs the benefits with the limited space. The main problem will be mist hitting the opposite wall and converting back into liquid before it gets a chance to spread out...

Thats a shopping list and a half :) Can you draw a pic of your planned plumbing layout as it would help visualise where everything is going. I cant find any details for your chamber sizes or the type of nozzles you will be using.

The sw is the 3-way selector switch for manual, auto or off. manual, lets you override the pressure switch manually to turn on the pump, auto is normal operation and off is..off :) Its not worth $25 as you don`t really need the manual or off options.

The thing to remember is the smaller the pressure differential on the tank, the smaller the usable capacity will be. The regulated pressure will be the same as the pumps cut-in pressure. If you decide to use 125 psi regulated you`ll have no more than 25 psi of tank differential to work...

Hi Deseee Looking at the specs, the Watts Small Water Pressure Regulator 26A (2 way) seems ok, its strange how the 3/8" is cheaper than the 1/4". I can`t really recommend any apart from caleffi as thats the only brand i`ve used. Any pressure switch with an unloader will be designed for...

Hi Bob AA involves even more calculations than hp, you need a new set of formulas for compressed air. A noisy shop compressor could charge a single tank to 8bar (120psi) once a day. The problem is to run 8 of my nozzles for 24hrs, the tank would need to be around 120 cubic feet, which is the...

Too good to be true i`m afraid :) I have a couple of italian caleffi`s like the one in the link. They handle inlet pressures upto 16-bar and the output is adjustable from 0-6 bar. I paid the equivalent of $89.50 each, they came with the pressure gauges. The gauge screws into the (capped) angled...

You should be able to get an 1/2"-3/8" adapter/reducer.

you`d have to have some differential, running 100-102psi with a 34gallon tank gives you all of 0.6gallon before the pump kicks in :) The regulator keeps everything constant, remembering that aero is all about control. An AA nozzle is driven by compressed air. If you fire an AA nozzle into a...