Low nitrate would help red plants recover their redness but do be careful as too low of the nitrate would stunt the plants...rather than green plants than stunt plants. Oh..one more thing, some plants grow slower with very low nitrates and this would invite algae growth once the plants slow down.
What kinda of fert dosing regime are you doing currently? Any PO4 added? Nitrate uptake slows to a crawl if PO4 is too low..
Bookmarks