HOZON siphon mixer

[peeweelovesbooks]

Thanks for the explanation!!!

[Cym Ladye]

I have used the Hozon for over thirty years with success. However, what Ray says on the habits of the unit are absolutely correct! I will add that using anything longer than a 50' hose causes problems in flow ratio too.

CL

[DavidCampen]

I am using the Dosmatic MiniDos 1%:
Dosmatic

I have it plumbed with a 3-way ball valve and check valves so that I can switch the feed to my spray wand between RO water and RO water dosed with nutrients. It is really great having fertilizer solution "on tap".

Originally Posted by Ray

You don't need different devices at all.

Let's say you want 125 ppm N and your metering pump is set to one ounce per gallon 1:128.

Example 1: the Greencare MSU RO fertilizer. According to the label, you need 3.55g per gallon for that dosage, so you would mix up 3.55 x 128 = 454.4 or 1 pound of powder per gallon of concentrate.

Example 2: The MSU WW formula, which requires 2.5 g/gal for 125 ppm N. 2.5 x 128 = 320 grams, or 0.7 pounds per gallon of concentrate.

Some metering pumps have adjustable ratios, but I find it's better to set it, and do the rest of the adjustment via the concentration of the stock solution you feed into the water.

You DO need to consider water flow and pressure, taking into account your supply as well as accessories you may use when watering. The Dosmatic pump I sell (Minidos 2.5%) meters accurately from 6-140 psi and 0.03-12 gallons per minute, so can handle my "fire-hose" watering technique or my ultrafine misting.

Another thing to consider is selecting the ratio so the concentrate won't precipitate. My 17-year-old Dosmatic can be set for as high 1:256 (1/2 oz/gal), but that is on the ragged edge of solubility of the MSU RO fertilizer (2#/gal), so I avoid that, going with the 1:128. (The Minidos is good for 1:200 to 1:40)

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[Ashby Chadburn]

I used the siphon for years in my greenhouse. Then I stated having trouble with my orchids. I asked a generous orchid grower for help. She checked the pH of the water. That was fine. Then she used her meter to measure parts per million of the fertilizer coming out using the siphon. It showed the dosage was around 1200 ppm when mixed according to the siphon directions. I bought a Dosatron and I have never been happier with the results. I bought a meter as well and check the mix before every watering. It's easy to use and what a difference in my plants. I use the MSU well water formulation fertilizer.