hey D, nice Killies!
Your algae problem, is that black hair algae running around in there? if so, I feel for you, I once had a horrible infestation wipe out about 200 dollars worth of plants, and for the life of me, I can not figure out why I got it, all my levels were pegged bang on and it shouldn't have been growing at all...
anyhow, I finally stopped it by breaking down the tank, and putting all the plants int a five gallon bucket of RO water, I then in another bucket, I added water and a cap full of bleach and began doing dunks, this damages the plants, but it kills the algae (or at least seriously retards it.) I then put all the plants back in the RO bucket, which by this time had been generously dosed with Amqel and stress coat (probably over kill... but when dealing with bleach...) the fish lived in a huge ice chest for 4 days while I scrubbed every nook and cranny of the filter system, tank, you name it, I scrapped the substrate, boiled the wood and rocks, (actually had to BROIL some of the wood for a few minutes as it was to big to fit in a pot.) any way, when all was said and done, I knew I had a fun time ahead of me, as I had oblitereated my biological filter (i wanted to reduce the chance of the black hair algae getting back into the tank so all new filter media, new gravel, anything the algae could have grown on... was sterilized.)
I set the tank back up minus one filter which I left on the ice chest, and (I was running dual emperor 400's at this time) I pulled a couple of emperor 400 filter pads out of my oscar tank which had no algae problems, and put one in each of the emperors and added a product equivalent to CYCLE, though, I don't remember exactly what it was. As I added the plants back in, I used a soft sponge and RO water to scrub the leafs of the plants that could handle it, like swords and what not, got as much of the residue off as I could, same with the wood and stones, and then added in the plants I couldn't scrub, like the crypts, which were to fragile, if they had leaves with residue, I removed them, threw some plants away, and sadly, some didn't survive the witches brew of chlorine bleach... (Of course, the lace leaf didn't survive the algae, and the bulb rotted while in the pot... that hacked me off, it was a gorgeous thriving plant prior to that.) all said and done, everything looked great for a few weeks, and then the blasted stuff started coming back, checked my levels, everything again, bang on... did a water change... so on, so forth... finally a few months later, I read about Siamese Algae Eaters... wonderful little creatures that should be a required purchase with every live plant. I added about ten of them to the tank, and low and behold, the next morning, there was not a scrap of the black crap in the tank. I am sure it was still growing, but it was gone from sight and controlled... good enough for me. I later added malaysian trumpet snails, which also do a number on algae and leave your plants alone... this setup held up right on through to the day I finally broke that tank down and moved into the infamous 'no aquariums' apartment complex...
I am now finally in a new apartment... but the aquarium is housing my CP's..
happily... by the end of the year, my old 30 gallon hex (which used to be home to guppies I bread to feed my oscars and arrowana - I know... I am mean... ) will soon be a micro-reef... so.. happy days will soon be here again... and when I get a house, I am planning on building a huge tank into a wall... should be nice... that will be salt, and I will probably do another large one (and limit myself to two) that is planted fresh water.