With the 2HR Aquarist APT-EI, the famous nutrient dosing approach pioneered by Tom Barr is now available in a ready-to-use concentrate that removes the guesswork from trying to recreate this powerful and sometimes elusive formula.
Buying the nutrients separately easily add up to US$75+. A 500ml bottle of APT costs US$24.99
"I have a nice 135 gallon planted tank. The plants were nice, they grew ever so slowly and appeared healthy yet the color was not great. Corn white leafs and some paleness to the general look. I was using both in gravel ferts and bi-weekly doses of seachem products. I ordered the 2hr Aquarist fertilizer. in three days ( one dose) I thought I noticed some greening up of the riccia. In one week and two doses it was obvious that the ground cover ( Cuba) and the riccia were definitely greener. Two weeks on and the planted aquarium has taken on a whole new green green, healthy look! GREAT product."
100% comprehensive Macro+ Micro formula of N, P, K, Iron and Traces in our proprietary Capstone RatioTM.
APT has been an absolute joy to use! My plants have experienced significant growth and colouration when paired with CO2 injection. What is best is that the product contains all the macro, micro and trace elements all in one! The dosing regime is also really simple and convenient, perfect for me even with my tight schedule. It saves me the time of mixing my own nutrients and saves me the money of getting all these nutrients separately. Thank you for making such a great product right here in Singapore!
Try it for 100 days. If it doesn’t work, get a full refund. We are aquarists too and want the best for you.
"Firstly I'm a beginner aquascaper. In my very short aquascaping life I used many fertilizers like ADA, EI, APK and APT. But most of all I like APT most. Because it's cost effective [and] so amazing. You can see changes within 2 weeks. Also I'm a lazy man [so] it is most suitable...for me 'cause l need to change water once in two weeks? Now my plants are more bright and healthy. I recommend to you that you need to sharp[en] your scissors 'cause you need to trim more and more after you use APT. Thanks 2Hr Aquarist for APT."
This product has worked extremely well for me. All my plants are very vibrant in color and have been growing like crazy. All my greens pop out as well as my reds. The one thing that you should know is there is no pump attachment available in the US, so you will need to purchase something on Amazon, but Don (2Hr Aquarist Team member) has told me they are working on something as well as the costumer service is like no other, there is so much information on there blogs and they want you to succeed and help you out when you need it. 10/10 for the whole 2Hr Aquarist product and team. Definitely recommend for anyone who’s thinking about this.
The plants look healthy and Fast growth No livestock lose Suitable with dutchstyle and Farm tank.
I’ve had excellent luck growing my mini hair grass carpet with this fertilizer. I have a high energy system (60 PAR, 30 ppm CO2, 7.5 ppm O2) so I have been dosing 5x the recommended amount of fertilizer daily to ensure there are no nutrient deficiencies in the tank (and to stop any feast/famine cycle). I combine this with a 50% weekly water change. All of these steps follow George Farmer’s recommendations for a high plant growth with the EI method.
Above: a slower-growing non CO2 tank using APT Zero.
Which product is right for me?
For tanks with more fish, fewer plants. For new tanks (<3 months) with aquasoil. Comprehensive nutrition without nitrates and phosphates for maximum algae control.
For tanks with more plants, fewer fish. 100% comprehensive macro, micro and trace minerals. Unique Capstone ratio unlocks richer colors and stronger growth.
For heavily planted Dutch Style tanks and users who understand EI methodology. Supremely concentrated and expertly balanced.
It is normal for tanks less than 6 months old to have various bouts of algae issues, most of which can be avoided with proper cycling prior to planting. APT cannot compensate for inadequate cycling.
It is also normal for plants to take several weeks to adapt. APT helps to speed up the process, but you still need patience. In tanks without CO2, this takes 2-3 months. Adaptation may involve shedding leaves (yes!) and / or having leaves that appear deformed. The hardest, yet most effective response is to tinker less and provide a stable tank environment for the plants to adapt. Look for improvement in NEW LEAVES, not old ones.
A mature tank can respond to better nutrition in several ways. The best (and most common) outcome is healthier NEW GROWTH. Old leaves do not rejuvenate even when conditions improve, and may even deteriorate faster, as we explain here.
In rare cases, better nutrition can seemingly trigger algae. This can happen:
(a) if there is prior accumulation of organic waste, especially on mosses and slow growers. When plants adjust to a new nutritional environment, they release proteins that serve as food for algae. The combination of accumulated organic waste + excreted proteins can be a trigger for algae.
(b) if volatile organic matter is released due to replanting or cleaning. In mature tanks, volatile organic matter builds up naturally in the substrate and hard-to-reach corners. When inadvertently released, often coincidentally with improved nutrition, algae can bloom. This can be avoided by performing thorough water change the 2Hr way after replanting / revamping the tank.
(c) if seemingly ‘OK’ plants (especially slow growers like Mosses, Bucephalandra, Crypts, Java Fern, Anubias, Alternanthera species etc.) are actually not as healthy as they appear. Plants often respond to improved tank conditions (better nutrition, or lighting, or CO2…) by accelerating the shedding of older, less healthy leaves. This attracts algae, which help in the decomposition process. Slow growers that are not healthy are especially hard to spot, as they can be in 'Zombie’ states for a long time, as we describe here.
(d) finally, if you are making a drastic change in dosing regime (e.g. very lean to something alot richer, or vice versa), this forces plants to reprogram their cells to adapt and this process almost certainly triggers algae. A gradual transition over 2-3 weeks often helps. But the longer slow-growers have adapted to a particular environment, the harder it is for them to 'switch'.
If you have a mature tank (> 1 year old) and are looking to improve plant health / growth, please check out this article.
Questions on usage, dosage or your tank? Let us know.
We also have a detailed FAQ here that may help.