Day 16 Flowering.
I've decided to drain and re-fill my reservoir, with much hesitation... My pH has been dropping fast, with no explanation whatsoever.
I use Lucas formula with different types of system elsewhere without doing a rez change at all, but I really can't come up with much else.
I am adding 200ml of GH pH up every 2-3 days now just to maintain proper pH levels.
Keep in mind that:
1)my root systems are perfectly healthy on every plant
2)I only use lucas +h202 +zone (zone and h202 have no nutrient profile)
3)plants look perfect
Pics attached
![Smile :) :)](/styles/smilies/icon_smile.gif)
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