so im doing dwc in a rez no more then a few gallons with lucas formula, i was wondering can i go with out changing my water and just toppin it off?anyone done this and had good results?
Whats up holyhydro? In my opinion, topping off your nutrient solution is only okay "in between reservoir changes"..... Some say to change every 2 weeks, I stick to changing every week.....That seems to really help prevent salt build up and general nastiness in the reservoir...... good luck on your grow!
I say at least change it out every month, before harvest, and if you had a salt build-up you should change out the rez after the flush of the medium imo GL
i say change it out every week: 1. if you can afford it (the cost for replacement nutes) 2. if you don't want slime/algae growth good luck