low tech algae


Prolific Poster
Mar 23, 2008
Hi all,

I've been at this since about February and have learned alot from this site, but have more questions...I'm stuck!

Some of my earlier algae problems were due to poor flow, too little co2, inconsistency, and even direct sunlight seeping through the (closed) blinds.

My 55g is now low tech with no co2 a 54watt t5 ho bulb. I've started dosing seachem flourish, 1/4 teaspoon kno3, and 1/8 teaspoon kh2po4 weekly as recommended by Tom in "non-co2 methods". My problem is this persistent algae on the glass. I cleaned the front glass and did water change last week right before dosing, and as usual, this algae reappeared on the front glass in 3 to 4 days like it always has. I have plenty of other algae in there from before, but this algae clearly grew since dosing.

The only thing I can see I'm doing differently from that non-co2 post is not using any rich substrate, just black pebbles with API root tabs plus iron near my planted plants.

Tomorrow -thursday- will be one week and I'm scheduled to dose again, should I do anything different?


Forgot to mention - this algae does look like green dust when I scrub it off, but it has never gotten to the point where it will fall off the glass easily, and it doesn't look like the gda pictures on this site. It most looks like green beard algae.