All cheap montipora are fairly easy, hence why they are cheap to get frags of. The main advice I can give you is don't go over the top with water changes and low nutrient conditions. Middle of the road alk at 7.5-9, nitrates 1-10ppm and phosphates low but readable. Depends on the test but you want just readable phosphate, not non existent. Also 165w of led is rediculously high for a 29g. Turn them down to like 20% and move up a little each week till you see them pale out in the top of the tank then turn them down a little. If plating montipora grow in a cone they need more light, like lava flows less light, a fairly flat bowl and it's just right.
Euphylia hate low temperatures so keep it above 78. Most lps do ok with the low but detectable nutrient levels and lower light levels than the montis.