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Is doubling your E.C. with reservoir change dangerous?

Posted by widespreadpanic 27936 (My Page) on
Sun, Apr 25, 10 at 12:39

I have an ebb and flow tomato grow:

I changed my nutrient reservoir today and switched from GH maxi grow to using Floramato. My E.C. doubled from .84 to 1.62. I used the recommendation for "fast growing" plants and did not use in either case the most extreme feeding.

Is a dramatic change like this going to have an adverse effect on my plants or is it possible they will be happy b/c I was "starving" them of nutes originally?
Thanks for your help.

Here is a link that might be useful: The Greene Tomato


Follow-Up Postings:

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RE: Is doubling your E.C. with reservoir change dangerous?

It will probably be a bit of a shock to them at first, but I'm sure they'll bounce back. Tomatoes are weeds. They'll grow through about anything. 1.62 is probably more along the EC they'll like than 0.84 too so I'd say they'll appreciate the extra food.


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RE: Is doubling your E.C. with reservoir change dangerous?

Why don't you simply play safe and do it in two steps with an interval of 2-3 days. Would that be difficult to realize technically? ;-)


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RE: Is doubling your E.C. with reservoir change dangerous?

Don't worry widespreadpanic Lucy is a ass to everyone , he had just about ruined another forum "http://www.hydroponicsonline.com/forums/" Until he got locked out!


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RE: Is doubling your E.C. with reservoir change dangerous?

If my Lucy you mean lucas, I have had an entirely different experience. He/she has only been very helpful to me so far and I probably would have killed my plants by now if not for he/she.

Anyway, Lucas, no I can't step it up in intervals b/c I had to do the reservoir change before I left town for 3 days.

Oh well, they looked ok this morning, we'll see how they look when I get back.


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RE: Is doubling your E.C. with reservoir change dangerous?

I agree that it would have been better to transition slowly to a higher EC unless the goal is to shock (some people do that to induce flowering). But, when time is not on our side, we do what we must. Don't worry about it. Next time, mix a couple gallons of nutrient solution and test the EC. Take note of the EC based on the amount of nutrient you added to the water. I find that the directions on commercial nutrients call for much higher dosages than I feel work best. For example, GH's Flora series usually puts me up around 2 - 2.2 if I follow directions and use rain water. I find 1.6 to 1.8 to be perfect for the variety of tomatoes I use it on (Brandywine and San Marzano Roma's). Like Grizzman said, you aren't likely to hurt them much, if at all. You might even see some explosive growth after a day or two. Depends on the age of the plants.


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RE: Is doubling your E.C. with reservoir change dangerous?

Well, it is always safe to slowly transition to a higher EC reading to avoid any unfavorable experience...So, how are your tomato plants doing now?


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RE: Is doubling your E.C. with reservoir change dangerous?

They went nuts! Seems they were 'hungry for more'!

I've had to start drastically clamping them to my cages in a spiral fashion so that I don't run out of room too soon.
Check out the link below to my blog for lots of photo updates.

Here is a link that might be useful: The Greene Tomato


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