great low techs everyone!
just gravel and mts. i add nitrogen and phosphorous once a week along with some flourish now and then. haven't been changing the water at all lately. lighting is 2x21w t5no for 8hrs.
i might get flamed for adding this photo here, but up until one week ago this tank was non-co2/non-excel. lighting is 2x24w t5ho suspended way up above the tank. substrate is play sand and mts. i was dosing fallowing the tom barr non-co2 method. nothing has changed in the tank yet except the bubbles.)
all i did to take myself out of the low tech category was add co2, more ferts, and lower my lighting a little.