Hi, I had the same problem, but what i did was to get several small to medium sized teracotta pots and drilled the holes at the bottom of the pots a little bigger and put the rooted plants into the pots with their own gravel and substrate fert. This stopped my burroweres from digging them up, it gave my tank some new dimensions as it raised the plants a little higher, and it also provided additional hiding places for fishes.