Interesting that you say that, I was increasing all nutrients and Base by 50-75 PPM per day, and I too have been thinking that it is an over-abundance of calcium in the solution, I use RO water and add Calmag 1st, to 100- 180 PPM (ECx700)
I have a 30 Litre system and my general rule of thumb is once I've added the total Volume of the solution in Top Ups then it is time for a full flush and refill.
My Top Up solution has been at 2000PPM and if my whole system drops by 4 Litres I add 1 litre of 2000PPM nutrient solution to the reservoir and let it recirculate, the PPM climbs to about 1000PPM after 10 mins, then I add 3 Litres of water, so 2000PPM at ratio of 3:1 brings to PPM down to about 750+\-
I have been thinking am I temporarily burning the roots when it climbs and recirculates for 10 minutes.
I stripped all of the largest fan leaves showing symptoms and obviously it has gone. Haha. Although I can see it starting on new large leaves on the Smaller White Widow Auto. After another 4 days of top ups it is time for another system flush and fresh refil. Is this a calcium over feed or a calcium underfeed. Or is it an issue like mg and fe, k and p.
Is it an issue exposing the roots to fluctuations temporarily or letting the solution run a little bit longer before topping up, like 24 - 24 hour delay so the system drops to about 18-20Litres.
Also need peoples opinions on changing to a Light Panel, LED for veg and flower that can light successfully a 2.2 x 2.2 Meter room or replace a 1000watt MH/CMH/HPS. I would like a fairly large light that is a one system unit, such as a combined row of light bars etc...and is high a performance rating, highly reviewed and proven results for both Vegetive and Flower. Im thinking atleast 2000watt but I'm but I'm no sure with LED to CMH PAR comparisons, especially as each light differs, any personal reviews would be greatly appreciated. A good wide range of semi commercial\hobbyist significance
Thanks guys
Peace from the Meadows
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