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Lucas Formula Defined/Explained

I

Inspired333

...Addback Calculator - (For Advanced Users)

Say you were running the 0-8-16 formula, at 0.7 conversion with a 22 gallon res. When you first fill it up, your ppm will be around 1330.

Now you have been growing for a week, and some of the water has been taken up by the plants, some has evaporated, and now your res is at 947 ppm. You need to get your ppm from 947 to 1330. Here is the equation:

((target - current) / target) * 8 ml per gallon * res gallons = Flora Micro (ml) double this figure to get Flora Bloom (ml)

Example:

((1330 - 947) / 1330) * 8 * 22
(383 / 1330) * 8 * 22
0.3 * 8 * 22 = 53 ml Flora Micro

53 ml Flora Micro, double that and you get 106 ml Flora Bloom. So 53 ml Flora Micro and 106 ml Flora Bloom to add back to your 22 gallon res to get you from 947 to 1330. ...

Hold up - so "53mL and 106mL" per gallon ?? to get back to target ppm??
-Is 53mL per gallon of addback water is that the total amount that you would dump into your res?
-Does this take into account how much water you'll be needing to add back. Or should I say 'is the amount of water you need to add back going to affect this "correction" '?
 
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