Agreed.. I'll clarify my limited experience... while my lights are technically on for 12 hours the first & last hour are blue light low intensity (<10%) and 1 hour break down to 20% daily.. Been thinking of extending the break so may give that a shot like F FJB and Fishman Dave .. My lights peak at 68% for 7 hours daily. the other 5 hours between 10-50%..I don’t tend to light tanks more than 8hrs per day. Apparently good results are seen with 4 hrs light 2 darkness then another 4 light so maybe worth a try.
I first read about the idea that Fishman Dave mentioned here on MFK and was quite astonished at the difference it made in my tanks. Apparently the explanation had something to do with vascular plants being able to utilize the light even if it is administered in several short doses, but algae for some reason are less able to adapt to that schedule. Must be something to it, as this simple change in light timing pretty much eliminated most of my algae. In fact, a couple of tanks in which I was trying to encourage the growth of hair algae needed to go back to one long light period versus two short ones because the hair algae was largely disappearing. Tanks that I wanted algae-free remained so as long as the light period was divided.I'll have to give that after I win the battle with BBA .
Also... I've managed to bring a whole plant back that had a huge and healthy rhizome but knackered leafs that I brought on ebay. It had a good 15+ leafs. I cut all but 2 leafs off and then just stuck it in the back of the tank and forgot about it. 6 months later it had 4 new and healthy leafs and looks good to go now. Just took patience (which I normally lack with dying plants).
It’s my first plant and I’ve been growing it for a few years, so I’d rather not lose the whole thing. The rhizome looks good, not rotting or anything.