I have usually set up all my spawns in Higly planted tanks, with water around 80 or just below. IMO this allows fry to have plenty of Live Mico foods swimming around as they grow, usually eating more than needed than less...The cooler water IMO also makes fry a little hardier..making water changes and temp drops easier on the fry.
However, i just spawned my VT in water 82-84' and had some significant changes. So far the main difference is numbers..
I have seen well over 100 in this spawn...making this my largest spawn yet.
There are around 100 swimming around now, and they are acually A LOT larger than most of my other spawns as well. In some cases larger than the 1 week old fry I have..No joke...
I posested bunch of pics...of the nest underneith before I removed the male...and then some of the fry a day after the male had been taken out...Enjoy..