Maybe you can fit one more strip on? They'd be hanging off the edge but the actual LEDs would be safely above the heatsink.
Also, those strips from cutter are just 3000K Samsung LM301bs? Nothing special? And the other strips, are those just all 630-660nm reds on their own strips?
Why didn't you just buy pre made Samsung strips rather than having Cutter do it?
I searched everywhere, could not find good strips at this price in 3k. They were sold out almost everywhere. I was not about to buy strips from Alibaba. Somebody suggested Cutter to me, i checked them out and their strips are good quality and good price. The smaller strips are listed below.
2ea 1 ft strips of Semileds UVA 385nm(3), 410nm (3), 840nm IR(3), 730nm(3) Flower Supplement
4ea 1ft strips of Red Heavy 840nm infrared(3), Cree XPE-2 Far Red 730nm(3), Cree XPG-3 Deep Red 660nm(3), Cree Red 630nm(3)
I'll be getting the other 4 strips listed below within a week.
2ea 1 ft strips of Mixed Wavelength UVA. 365nm(6), 380nm(6), can be run 12 in series or address/tune, each 6 led channels
2ea 1 ft strips of Cree XPE-2 Far Red 730nm(12) All in series, Emerson Effect PCB
Cutter's excellent customer service made me a repeat customer. Without too many details, they accidentally sent me 4 Red Heavy strips instead of 2 red heavy and 2 far red. I received my order yesterday, and within 5 minutes of contacting them, they are sending me the 2 Far Red strips and i get to keep the 2 extra Red Heavy strips.
Also the strips i received from cutter are built extremely well. Comparing them to my Spider Farmer QB's and HLG's i have seen in person, they are the highest quality i have seen. Granted i have not powered them up yet so am only going off feel and looks.