I have a single that seems to refuse to grow beyond the coly's. They're about 1/2" long on each side but the bugger just won't set real leaves. Looks very healthy in fact wish some others that are growing had such a wonderful dark green healthy look. Should I toss it seeing its using lighting precious lumens or wait. Must be 2 weeks by now but gave it a good tug and it's firmly hooked up under ground. Odd and the only one ???