hi to every body at equaria central.this is the first time I hve posted a question. i have a question about laterite. i have a 55 gal tank that i set up about three years agowith plants i used laterite under the aquarium gravel.I also use diy co2.and 160 watts of light.the plants are doing good but the dont seem to grow as rappidly as the useto. i was told the i had to replenish the lateriteonce a year. is this true and if so would i be better off mixing flourite inthe gravel.any help will be appreciated thanks anybody can email me at swick@att.net