Flushing, Harvesting 2 Strains HELP!!

Hi, my fellow growers. I'm growing 20 Of Barneys Farm LSD feminized (8-9 weeks flower) along with 4 of Dinafems Seeds Critical + (45-55 days Flower) plants all in the same Superponics Hydro System. But my question is how would I go about flushing the 4 Dinafems Critical plants for haevest, without flushing my 20 LSD Plants in the same hydro System being that the Dinafems are going to Complete flowering in HALF the time of my LSD's?? All Suggestions are welcomed Please

Why flush? What problems are you having? I don't understand why you would want to starve your plants at the exact moment they want food the most to "bulk" up in those final hours. Flushing is for when you are having problems and need to flush out salts. I've been growing hydroponically for nearly a decade and a half and I've found that flushing at the end of a harvest simply reduces your yield. All flavor and harshness is controlled by sugars, starches and chlorophyl. All of which are affected by the curing/drying process but NONE of which are affected by the lack of food.

Fatten up the cow before you slaughter it. Do the same for your plant.

It's my first grow--- But what I was saying to be exact was that I'm harvesting my Dinafem Critical strain after 45-50 days of flowering. But Im flowering the Barneys LSD strain for 8 weeks. I need to flush the critical strain before harvesting but I don't want affect the overall yield of the LSD strain by flushing those as well... Their all growing in the same hydro-system

You can flush the whole system for a week with 200ppm nutes or 5.8pH tap water then harvest the Dinafems and start back at 50% strength or like 600ppm and your LSD will be fine.

Another way would be to use clearex, get it done in 4 or 5 days but start back at 25% nutes.