Lots of little reasons. Ive read about eco complete going bad after a while or contaminated bags (problem solved im sure), it was also slightly more expensive, it floats more readily than flourite (or so ive read), buffers water (which i dont need or want), difficult to clean (gravel syphon), it is also man made in my mind that is FAKE stuff.
All of these reasons are minor and can be worked around. Im sure its a great product and I was thinking about it for the fact that it was black.
I chose fluorite because its a natural baked clay that will absorb nutrients (that i inject into the tank) into itself thus holding and slowly releasing them back to the plants. I could not choose black because aquariumplants didnt have it in stock
(still said comming soon). It doesnt bother me too much because the regular colour looks more natural anyway.
I currently have inert black gravel in my other tanks and the grain size is large. I have a difficult time keeping my rotala indica and rondifolia as well as a few others planted because of the large grain size so im not expecting too much of a difference. I can always put a small marble or stone on the roots/stem of the plant I planted to help hold it down. I do it with stubborn plants and it works great. I can also plant extra deep which works well for some thin plants too.
Thank you for the updated list. Its great LOVE IT!
I cant imagine growing some of those plants in 1.1wpg. Would that be a list for 2wpg and under?
If so maybe there should be a category next to it for minimum light threshold for each plant?
Again its a wonderful list and I will definitely be using it.