2HR Aquarist All-in-one Aquarium Plant Fertilizers APT 3 / Complete (500ml)

Complete plant nutrition in a totally non clouding formulation. Includes a graduated pipette for precise dosage relative to aquarium capacity. Does not cloud the water at all, and produces dark green, rapidly growing plants. Very highly recommended. A very small amount produces truly amazing results. Had no effect on our fish.

switched from AquariumCoop's to this, I actually prefer this more since it doesn't cause as much algae as AC's (for me), my plants are very much thriving and the leaves of my ludwigia got so miuch bigger, and more vibrant! my Rotala (idk exact species) have a warm tone color when it grows. I dont follow instructions exactly, I use 1mL per 10G two/three days out of a week. -Note: Just because AquariumCoop didn't work for me, doesn't mean it won't work for you! it's just what will work for you vs me.

The first time I tried to grow demanding plants without a proper fertilizing routine, my tank looked great for two weeks… then the stems stalled, leaves paled out, and algae slowly crept in. That frustration is what pushed me to try 2HR Aquarist APT 3 (All-in-One / Complete, 600 ml) — and it honestly simplified things more than I expected. 🌿 Plant Growth & Color APT 3 is designed for high-energy tanks (CO₂ injected, strong lighting), and that’s exactly where it shines. Once I started dosing consistently, I noticed stronger stem growth and deeper coloration, especially in reds. New growth looked fuller and healthier instead of thin or washed out. ⚖️ Nutrient Balance What I appreciate is that it’s truly all-in-one — macro and micro nutrients in one bottle. No juggling separate nitrate, phosphate, potassium, and trace bottles. That simplicity makes it much easier to stay consistent, which honestly matters more than anything. 💧 Ease of Use The pump dosing system is convenient and clean. Measured pumps make it simple to follow a schedule without guessing. It blends into the water quickly and doesn’t cloud the tank. 🌱 Algae Management In my experience, algae didn’t increase when dosing correctly. That said, this fertilizer assumes your tank is balanced — if lighting or CO₂ are off, nutrients alone won’t fix that. It works best when the rest of the system is dialed in. 🐠 Livestock Safety I haven’t seen negative effects on fish or shrimp when dosing according to instructions. As with any fertilizer, consistency and not overdosing are key. 📦 Bottle Size & Longevity The 600 ml bottle lasts a while even in medium to larger tanks. If you’re dosing daily in a high-tech setup, you’ll go through it faster, but for most users it’s good value considering the concentration. 💰 Value for Money It’s not the cheapest fertilizer on the market, but it’s formulated for performance. For high-light, CO₂ tanks where plant health is a priority, the results justify the cost.

Amazing fertilizer; need the proper lighting and CO2 to have good results

I went through a few bottles of APT 3 before switching to Thrive C because I wasn't seeing the results I wanted. After switching, my plants really took off and were also healthier. There are numerous variables in a planted tank and I'm sure APT 3 works great for some, but it was only OK for me. I still use another 2HR Aquarist product which works better than it's competitors, so I guess the key is to find the product that works for your own tank(s).

Simple to use, and doesn’t mold like most of the DIY powder mixtures I was using previous. Fill up my 1.5 L reservoir, and let the dosing pump do the rest for 3 months.

It's difficult to know for sure how much a fertilizer is contributing to healthy growth of plants, either submersed or in the garden. In an aquarium there are many factors involved. After using this product for about a month I'm seeing healthy aquatic plant growth, in conjunction with proper lighting and CO2 supplementation. I use a bit less daily than what's recommended on the label.

Plants seem to do really well with this. I dose 0.5mL for my 5 gal tank, 3 times a week. Will update if anything comes up.

This is one of the best all-in-one fertilizers I’ve used. Easy to dose, and my plants are thriving with rich color and steady growth. Algae is under control, and I’ve seen noticeable improvement within a couple of weeks. Highly recommended for planted tanks!

Très bon produit

Fantastic product , my plants are really happy. Quality fertiliser!!! Handy pipette , beautifully packaged. Choice of products , according to tank requirements . I will only be using this for my aquarium, so a happy customer here .

The packaging was good and product also and received before time

This is the best all-in-one fertilizer I have ever used! I was struggling with yellowing leaves and slow growth in my low-tech setup, and nothing seemed to help until I found this product.