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Product Information

How to handle, store and use APT.

Safe for Shrimp?

Yes. All APT fertilizers have been tested to be safe even for delicate strains like Crystal red/ Caridina shrimps. APT fertilizers do contain tiny amounts of copper. Copper is actually an essential micronutrient for both plants and shrimp - no plant

Will APT raise GH or KH?

No.The Calcium and Magnesium levels in APT fertilizers are too low to affect your tank's GH levels. For example, APT provides ~1.6ppm of magnesium over the course of a week. In comparison, 1dGH is around 17ppm calcium/magnesium ions. So you would nee

Does APT contain copper?

Yes, APT contains copper in tiny, chelated form. But isn’t copper harmful?. Copper is actually an essential micronutrient for both plants and shrimp - no plant will exist in an ecosystem without trace amounts of copper. Copper (Cu) is a micronutrient

How soon can I see results?

How long does it take to see results?. This largely depends on your light / CO2 levels as these are the main determinants of growth speed in the tank. If fast growing plants have been facing nutrient deficiencies, dosing APT produces dramatically qui

My leaves are not improving?

As a rule, old leaves do not rejuvenate, as plants channel their energy towards producing new growth to replace old growth. This means that a yellowing leaf, or one already damaged with algae, will not become green again, no matter what you provide.

My leaves are turning yellow?

Newly added plants may turn yellow and deteriorate due to adaptation stress. Plants shed their old leaves and channel their energy towards growing new ones - Look out for the newest leaves, if they are healthy, you are on the right track. The old lea

My plants are not getting redder?

While nutrition plays an important role, pigmentation is dependent on many other factors - light, CO2, temperature, and horticulture methods.  Light intensity and spectrum are both extremely important. Check out this post for more details.For picky s

I still see nutrient deficiency!

Unlike our skin, old plant leaves do not heal. So the older leaves will not recover even if the nutrition is now optimal. New leaves however should be in general larger and more vibrant. For most stem plants, wait for the new, stronger leaves to deve

Why do I have low nitrate levels with APT?

In 2hr Tanks, we adopt a nitrate limiting approach that leaves little residual nitrate in the water column 24 hours after dosing. This approach gives stronger coloration for many species and reduces some form of algae in high light tanks. Nitrates ge

My carpet has uneven growth?

With more optimal nutrition, the newer leaves tend to be larger and more vibrant. The older leaves last longer as well. In carpets, this can create a sense of unevenness- big fat new leaves mixed with sad-looking older ones. This is natural, as plant