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Peters fert. dosage help- PLEASE

Posted by zgardennut zone5 (My Page) on
Sun, Dec 11, 11 at 18:32

I bought a tub of Peter's professional soluble plant food for orchids years ago. The content is 30-10-10
I was wondering if anyone has a tub of this sitting around that they could tell me what the mixture directions are? It has rubbed off over the years.
Researched on the internet but no luck.
Thanks!


Follow-Up Postings:

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RE: Peters fert. dosage help- PLEASE

Usually the all are a teaspoon per gallon. I use a ppm meter ti nitrate my poisonous brew. Since I water almost daily when it's warm, I want no more than an 150ppm change. Since I use a Siphonex which is supposed to dilute the mix 16 to 1 but in reality does other depending on water pressure, size of hose etc I measur the tap ppm, then the ppm of what comes out of the hose. I add enough of whatever to give a 150 ppm rise. In reality, I only do this now and then as a check since once it's dialed in, it never changes.

I don't know what the change should be if you water once a week, I suspect around 300 to 400. Measure the ppm of the water source, add 1 tspn per gallon and measure again. adjust to get the desired range. If you don't have a ppm device go to a place that sells water and act interested in their product, they'll test for you.

Nick


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RE: Peters fert. dosage help- PLEASE

Thank You orchidnick! I appreciate it! I have no ppm gauge so a teaspoon per gallon or less is it. Thanks so much!


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RE: Peters fert. dosage help- PLEASE

Here is a fertilizer calculator.

Full strength for most fertilizers is usually around 120ppm nitrogen. That would be about 1/3 teaspoon per gallon for your 30-10-10. And of course half strength would then be 1/6 tsp, and quarter strength 1/12 tsp. It may be hard to measure 1/6 and 1/12 tsp unless it came with a small scoop for those amounts.


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