Planted Tank Guru
Join Date: Nov 2009
Location: Missouri united states
Most likely will lead to water clarity problem's and as mentioned above ,with too much light either in intensity, or duration,,lead to algae bloom.
I believe these tab's to be comprised of largely iron and maybe some trace element's but I am not sure .
Maybe add some fast growing water sprite to the surface or rooted in substrate to help gobble up whatever they are comprised of?