You may be endangering your tropical fish without even knowing it. The fact is unless you have an in-depth understanding of the biological life cycles that are present in all tropical fish aquariums, you may be doing irreversible damage to your precious fish RIGHT NOW.
Behaviour you ask? Yes! I have a 125g planted tank, at the moment stocked with about 27 Vals (max 5") and 42 Anacharis (max 17"). Here's what I've been observing... my Anacharis go through a cycle (haven't yet determined the period) wherein they grow perfectly
After changing my substrate to RedSea Flourish, my tank has been cloudy and a dust has been settling on everything. I did rinse the gravel lightly, against what the bag recommended. I've had the tank for 6 years now and haven't ANY of these problems.