Yes I am using the grown and it slides in perfectly with the plastic legs it comes with you can remove them but I find it fits loose and can fall into the tank without them. I started the light at 25% intensity now at 50% after 2 months
I got the smallest one they have it’s a bit smaller than the stock light but makes up for it it controllability and par output it’s a very strong light I’m running mine at about 70% intensity with a preset schedule
The torch nearest the hammers may be fighting each other causing it to not open enough. I also read that goniopora require manganese dosing and feeding a few times a day. Your tank looks amazing.