RBTA Help please

[Tigweldpro]

Ok here's the story. I bought a medium size rose bubble tip anemone and added it to my tank, It seemed to be thriving with big bubble tips and eating a small piece of shrimp every 3 or so days it doubled in size and then split a small piece off of itself. Both the mother & baby healed quick and were once again thriving. After about a month they both started retracting and loosing there bubble tips. The only change that was made to the tank was very slowly increasing kalkwasser every 10 days until it met the demand of the tank 1 1/2 tsp per 10 liters dosing 1000ml per night through dosing pump & adding an anemone crab. Both anemones were looking like they were going to die and we were heading out of town for 3 days so I removed the large anemone knowing that if both were to die it would crash the tank hard. When we came back the small one was still alive but barely I did a 50% water change and it seemed to perk up for a couple days then went back to it shriveled self. It has now been very retracted for over a month and barely has any bubbles. Before this happened it was at least 4X its current size. Not really sure where to go from here I guess just leave it be unless it looks like it is going to die...