Planted Tank Obsessed
Join Date: Feb 2009
Location: Laguna Niguel, CA
Adding new substrate: is it ok to add it over old one?
I have a question for you, which I'd need your advice for. I setup my 75gl high tech planted tank about 5 years ago, and when I set it up I laid down a first layer of Eco Complete (about 2-3 inches deep) and I added about 1 inch of pure natural grave over it, because at that time I didn't know much about substrates for plants and I used to like the look of the natural gravel (3-6mm size.)
Now, some substrate areas of my tank looks like are making some of my plants suffer, so I am thinking to replace substrate in those areas, but I have a dilemma... Would you suggest to "remove" completely the substrate before replacing it with new substrate (which would be a very hard task to accomplish without tearing apart the complete tank), or do you think I could just add 2-3 inches of new substrate on the old one after have vacuumed it as much as I can? The old substrate on those areas has become a little bit compact, and the old Eco complete seems to have been mixed with the top gravel I laid over it 5 years ago after so many years of planting and re-planting in those areas.
I am still in deciding if trying ADA Amazonia (that could become messy after a while) or Active-Flora for which I have read very good reviews (and looks like it will be much more cleaner in the long term.)
I am awaiting anxiously for your valuable advice...
Thank you in advance!