You probably know that I am totally biased in favor of planted tanks. I have been experimenting, with mixed results in keeping plants in my Oscars' tank.
I am still experimenting with this idea, which likely will take some months ahead, as I continue to learn from my particular owned/cared-for pair of Oscars. There are enough anecdotal reports on intra-species differences in regard of a miriad of behaviors for fishes like Oscars, one of them concerns the co-existence of Oscars and plants.
My particular tank set-up, as well as my results so far, may or may not be duplicated with another pair of Oscars, but at least you could decide if give this a try.
A few days ago (December 13th, 2008) I purchased some aquatic plants, among them water lettuce and water orchids. These plants are not hard to find locally and their cost is around USD 0.15 per unit, farm raised in a "in-country store" 15 minutes outside my city.
I had to lower the water level in my tank a few inches to place them. This meant removing roughly 25UK gallons, which left my tank with barely 95+UKgals of water. To solve this problem, I came up with this simple idea, on which I am working at the moment. Building a height extension out of 1/8" thick non-tempered glass shouldn't be hard.
I spent a bit under USD29.00 to build this. I paid a glass technician to cut/sand the glass pieces which I glued using clear Epoxy to assembly the parts. I placed a 36"x13" hood assembly and a 36" light strip behind it.
I am sharing this ongoing idea so you help me improving it. The rear section, which I designed with cut-out parts for the HOBs, was discarded due to difficulty and cost (the glass technician suggested I used plexiglass/acrylic instead of glass); I modified it by using small pieces (2 and 2.5" L x 7" H of the same 1/8" thick glass) and intend to cover the open spaces with plastic knitting grids (easy to cut with regular scissors. looks better than egg-crate and quite inexpensive).
Pepe
Santo Domingo