First off, sorry if this thread has already been made a million and one times. I did have a scan using the search function before hand but didn't come up with any luck. Basically, I have just received some bulbs (NYMPHAEA STELLATA) as they were cheap and thought it would be a nice addition to the tank which should give it a bit of colour with the red. I've read that you should plant 1/3 of the bulb in the substrate and have the other 2/3 out of it. Could anybody confirm if this is correct or not?