Hello! Though you can keep them close I'd definitely make sure they dont touch. 85% of my euphyllia are torches so I dont worry much about them touching. Hope that helpz..
Do you still keep all these torches? That is freaking beautiful! Do you find all of your torches retain their color? Is there a particular type torch that retains its color more? Have you had any that have morphed from what how they looked originally? What par do you keep them under? Do you dose anything in particular for coloration? Feeding? I know torches can handle more light than other Euphyllia. I have a single torch that’s around 3 years old. It’s grown significantly since purchased. It used to be a bright neon green similar to one of yours. Over time it has lost a lot of that neon and isn’t as vibrant as it was. I Emailed TSA and asked them what they thought. Told them my parameters and Par levels where this torch is at. Which is around 150 Par. They said they keep their torches in around 200-250 par. They said I might try moving mine up a bit. They also asked if I dose aminos. Told them I do not. Just maintain No3 and Po4 within range. They said sometimes different lighting can effect whether a coral changes color or not. I’ve never had any of my hammers change colors, just this torch. I use a RB Photon V2 Over this tank. Not exactly the cheapest lighting, but not the most expensive. In my opinion it’s a nice light that uses quality diodes. They did comment that the torch looks very healthy and I agreed. It’s just not that bright neon anymore.
I wish I had a magic answer for you as I've been on the search for the same question.I would ask you the same question as I posted for Ben Seaver. Very nice garden indeed.