Yeah, your issue is the light of usable light at the bottom of the tank. I'd suggest upgrading to high output since you had issues previously. None of my swords are incredibly tall yet, all are young. At the most they can stretch about 4-5 inches currently. As adults all should grow to a maximum of 14-18 inches give or take. They do grow fast. Another month in my hands and they should at least double in size. Either way I'll have them.
-Gordon
-Gordon
