I think you both chopped a bit too early IMO. I don't like to hear things like 55 day strains, etc. They will be 53 day strains if you have a prefect environment and everything dialed in. I think you would have added so much more weight if you would have given it another 2 weeks, I think there's more to it than trich color, I personally like when the pistols are completely receded and are all dark, they will rock up in those last 2 weeks
Also agree that less is more in a recirc system, no need for a ton of products or a high PPM. my best runs have come from 600 PPM solutions with GH 3 part and some cal mag, add some MOAB at the beginning of flip and again 4 weeks before chop. temps and environment are so much more important than nute regimens. Good luck in your next grow, you will both kill it I'm sure.