DWC Flushing metehods

I have a 5 gallon DWC grow going with 2 plants. I'm 72 days into Flower with I think about 2 weeks to go....maybe longer. I have a couple questions on flushing techniques. My plan is to completely change my res with pH balanced water. I want to flush for 2 weeks, so I am wondering if just topping off with fresh water for 2 weeks would be sufficient or if I should do more than one res change.

Here is a link to my grow.....

https://www.rollitup.org/grow-journals/130641-first-grow-bagseed-w-cfls-18.html


How about everyone share their DWC flushing procedures!

bump........i wanna know a couple too

Doing a res change with no nutes is so simple I'd just do another one a week after the first then top off until the end. That way you are sure that there's nothing but water in there. That's just me. If it's that easy and can help the final product it seems almost dumb not to.

Gb- Thanks for the reply man! My trouble know is knowing when I am 2 weeks out. I think I look 2 weeks out but I dont know. Today is day 74 of flower of some random bag seed, and I am a first timer so that complicates things.

I use GH maxiBloom and I have got mad nutrient residue all over my upper roots, netpots and such, so I want to flush for a good 2 weeks.

Here is a pic taken Day 72 of flower.....Does anyone out there think I am 2 weeks out?

Can't see too well on my phone but looks close. Have you checked the trics?