Big Terps
Growing on a dime
Yep i do something similar. The last 7-10 days i straight up add ice in the resivors and cut the light back to do everything u stated.I refrigerate my water before watering my plants, tricks the plant into thinking it's cold out, always get some purple, but varies from plant to plant. Plus the extra shock should increase trichome production.
It seems to really help the hydro plants more than it did the organic soil plants. Just my 2 cents tho..