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2Hr Aquarist APT Fix

The smarter way to treat algae.
Especially effective algae control for BBA, hair/string/fuzz and most forms of filamentous algae.
Gently biodegrades completely.

Spot-dose up to 1ml per 10L every 24 hours.


Our Standard 300ml Pack comes with a calibrated spot-dosing pipette. 


3% Epoxy Adelhydes

the choice of award winning aquascapers

Above: single spot-dose of APT Fix. By Day 2, inactive BBA usually changes color to red and/or white. By Day 7, the leaf is now mostly free of algae.

Above: single spot-dosage of APT Fix via the drain-dose method. By Day 2, hair-algae has lost some color. By Day 5, all the hair algae has been deactivated.

Customer Reviews
5.0 Based on 39 Reviews
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    Bradford L.
    United States United States

    Effective for spot treatment

    I have some Bucephalandra that I moved from one tank to another (low energy to high energy). It was struggling during the transition, and some leaves developed green algae spots. Spot treatment with APT Fix for 2-3 days took care of most of that!

    The 2Hr Aquarist 2Hr Aquarist APT Fix Review
    Sirena B.
    United States United States

    Actually works

    I tried hydrogen peroxide, bleaching decorations, and reducing lighting to get rid of the dreaded black beard algae (bba). Nothing worked, until I used APT fix! This product really does work. I spot dosed with the filter off. I allowed it to sit approximately 30 minutes, then I performed a water changed. For the next week, I spot dosed areas of the tank, every other day. The bba turned a red or white when it was dead, this allowed my to see areas that had not been spot dosed. I also diligently removed any dead or severely algae infested leaves. It even worked on the green algae that was growing in my sand pond in the tank. I always keep a bottle handy, in case I see new areas of bba showing up.

    The 2Hr Aquarist 2Hr Aquarist APT Fix ReviewThe 2Hr Aquarist 2Hr Aquarist APT Fix Review
    Malaysia Malaysia

    The only effective Algae Treament i found so far

    I started my aquascaping since 2005, with years of experience, i never worry about algae, until around 5 years ago i met one type of filamentous algae - Spirilla like. It almost ruined my hobby. I put this algae to many small clear transparent glass, each treated with difference brand of algae treatments in very high dosage to see which brand is effective . Only 2Hr Aquarist APT Fix is working. With all other brands (include the famous Seachem Excel) , this algae is still growing under sunlight. Dumb up for APT For this super algae, i find 1x-2x only effectively control its growth, it took 5x overdose to eliminate this particular type of algae, and require few more treatment every few days (though you can reduce the dosage). Take note that for this high dosage it will **** your fish, for any overdose treatment, remember to put Air stone for your fish, for 3x overdose treatment and above, please move out your fish first.

    Brandon A.
    Malaysia Malaysia

    Absolutely love it.

    My tank has been suffering from green hair algae for three weeks and I was at my wit's end. It was until I used this APT Fix to deal with the problem. You may see some unhealthy plants dying as well but it is compensated for the fact that most of the algae dies as well. My tank is not completely free of algae now but it has helped me with balancing the tank tremendously. The best part is that I still have so much left of APT Fix that I can use anytime I need to deal with a sudden algae outbreak. All I can say is, 2Hr Aquarist products always meet my expectations and I do not expect nothing less from them. 5 out of 5.

    The 2Hr Aquarist 2Hr Aquarist APT Fix ReviewThe 2Hr Aquarist 2Hr Aquarist APT Fix Review
    Derek K.
    United States United States

    Best Fix

    This product is the ONLY product that has successfully and safely cut back my algae as a quick fix. I will say pay close attention because it's not wrong when it says melting Vals and Sags. I'm very impressed. And no fish even slightly bothered.


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