I’m by no means an expert on Acans. I have a Waterbox 20 Cube I have probably 8-10 different Acans in my tank and just ordered more. I have them all over in different places in my tank, some get quite a bit of flow and some get gentle flow all are open thriving and multiplying. I target feed LRS Nano Reef Frenzy twice a week to each colony and try to feed a little to every polyp I can. I also broadcast twice a week alternating between oyster feast and reef roids
I also use 3-4 times per week Coral Nutrition by Red Sea A&B (basically every other day)
My tank info and parameters are as follows:
Light: AI Prime (with setting set with help from one of the super knowledgeable guys @ my LFS) if anyone wants it I’d be glad to send a pic of my lighting schedule.
Eshopps Nano Skimmer
Aqua Mai KPS wave pump
Parameters:
SG: 1.025
PH: 8.1
Ammonia: 0ppm
Nitrite: 0ppm
Nitrate: 5ppm (can get up to 10ppm right before water change)
Alkalinity: 125ppm
Calcium: 430ppm
Magnesium: 1400ppm
Phosphate: 0.01 ppm
Temp is running @ 76-77
I test my water once per week and dose twice weekly with A&B by brightwell along with Trace Elements by Red Sea.
20-25% Water changes are done 2 times per month using premixed salt water from my local LFS.
I got 4 different acans from WWC during Fragtober Fest Live Sale in October of 2018 and all were 2 polyp frags.....they have each grown 4-6 new heads during that time frame. The others I picked up locally. One was a 3 head frag that has grown to an 8 head also purchased in October, and another 3 head frag that has sprouted 4 new baby polyps since being in my tank a couple of months.
Hope this helps!