I use flora series at 3/4 of ratio. Keep in mind all plants aren't alike. For example, I used 3 gallons at start of veg, on my GH waterfarm 3 gal bucket. Then slowly dropped. Now I'm at 2 3/4 gallons, just so pebbles will be soaked. I use nutrient equivalent of 2 and 1/2 gallons. So if your on week 3 or week 3+, for 2 3/4 gallons, use 25 ml of grow, 25 ml of micro, and 12.5 ml of bloom. These ratios are for weeks 3 & 3+ in veg. Idk how far along you are, but your water farm should have came with a schedule. Use floralicious plus at 2.5 ml if your doing 2 3/4 gallons. Which I highly reccomend you use 2 3/4 gallons. So your drip ring will literally POUR water out. Instead of it causing build ups in the drip holes, like bubbles and uneven water flow. Make sure the water level on your drain measure isn't at the white line like they recommend. Make it to where its half way from white line and drain support hole. So you can take into consideration evaporating water and water intake. Also keep in mind to water your pebbles. Put bucket on top of something. Use drain to poor the resovoir water in a cup and water the pebbles. So you won't have dry white pebbles all day. Or algae buildup. Do this twice a day when your also checking your pH twice a day. Keep track of pH levels in a journal, what time you checked and what time you watered. Doing this helps keep bucket clean and will give you a better smelling bucket. I also mix up the nutes by physically blowing air through the drain, make sure you have top bucket off. Do that twice a day and your nutrients will be aerated and mixed well all the time. Also your giving it natural co2 you exhale by blowing into the drain hole. It sounds gross but I do it anyways. If your using tap water, I highly reccomend you switch to flora micro hard water. Instead of regular flora micro. And before you switch out your nutes, leave the water sitting for at least 12 hours, to get chlorine and other bad stuff out. Just the water without nutes. Remember to let your plant sit in fresh water for about 20 minutes in between nutes changes, so it can drink good fresh water. Doing all these things will give you GUARANTEED results. Plus it helps you bond with your plant. I highly believe these plants have feelings. The more they know that they depend on you, the happier they are and the better they bond wit YOU. ( greener ) last thing, keep CFls at a good level. I honestly think you have them to close. I havea 100 w at 8 inches. And I have two more 100 w at 12 inches. Just so they can have light everywhere. You will slowly build your own traditions I promise. Everyone doesn't grow the same. What works for me might now work for you, being that we have the same hydro setups, you should follow these instructions. And tweak it according to your likings. Are you topping in this run by any chance? I got recommended to top and scrog on my current grow, which I will be doing. I can give you the link the guy gave me if your curious.