low tech planted tank fertilizer 2HR Aquarist APT 1 – Low-Tech Liquid Fertilizer
SKU: 9361186534
low tech planted tank fertilizer

low tech planted tank fertilizer 2HR Aquarist APT 1 – Low-Tech Liquid Fertilizer

Sale price$23.63 Regular price$26.26
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

low tech planted tank fertilizer 2HR Aquarist APT 1 – Low-Tech Liquid FertilizerAPT 1 is an all in one liquid fertilizer for aquariums with more fish than plants, and for new aquariums with aquasoil. The formula replicates the full balanced profile of APT 3 but without nitrates and phosphates because in fish heavy tanks, these nutrients are already supplied in sufficient quantities through fish food and waste. The result is maximum algae control combined with complete micronutrient delivery for healthy plant growth. APT 1 is 3

APT 1 is an all-in-one liquid fertilizer for aquariums with more fish than plants, and for new aquariums with aquasoil. The formula replicates the full balanced profile of APT 3 but without nitrates and phosphates — because in fish-heavy tanks, these nutrients are already supplied in sufficient quantities through fish food and waste. The result is maximum algae control combined with complete micronutrient delivery for healthy plant growth.

APT 1 is 3 times more concentrated than conventional fertilizers (in total soluble elements per ml), with components up to 50 times more bioavailable across a wide range of pH values.

Who is APT 1 for?

  • Aquariums with more fish than plants
  • New aquariums (first 1–3 months) with aquasoil
  • Low-tech tanks without CO₂ injection
  • Tanks prone to algae due to excess nutrients

How does it work?

APT 1 supplies potassium, magnesium, iron, and trace elements (B, Cu, Mn, Mo, Zn) without adding nitrogen or phosphorus. Plants use the nutrients already available in the aquarium from fish waste and the substrate, while the risk of nutrient oversaturation — the primary driver of algae growth — is kept to a minimum.

Dosing

  • 3 ml per 100 L daily
  • Recommended water change: 30% weekly
  • 300 ml (with pump) ≈ 3 months for a 115 L tank

Guaranteed analysis

  • NPK: 0-0-7 (+1.4)
  • Soluble Potash (K₂O): 7%
  • Magnesium oxide (MgO): 1.4%
  • Iron (Fe, chelated EDTA/DTPA/EDDHA): 0.09%
  • Trace elements: B, Cu, Mn, Mo, Zn
  • Safe for shrimp and sensitive fish

When to switch to APT 3?

After the first 3 months in a new aquarium, or once your tank has more plants than fish, consider transitioning to APT 3 — the full NPK fertilizer in the series.

Which APT fertilizer is right for you?

Product Best for NPK CO₂ needed?
APT 1 Fish-heavy tanks, new tanks with aquasoil No NO₃/PO₄ No
APT 3 Plant-heavy tanks, balanced aquascapes Full NPK Optional
APT e High-tech, Dutch style, EI method High NPK Yes

Frequently Asked Questions

What is APT 1 used for?

APT 1 is a liquid fertilizer for aquariums where nitrates and phosphates are already present from fish waste or a nutrient-rich substrate. It provides potassium, magnesium, iron, and trace elements without adding nitrogen or phosphorus.

Is APT 1 safe for shrimp?

Yes, APT 1 is safe for shrimp and sensitive fish when used at the recommended dosage.

When should I switch from APT 1 to APT 3?

After the first 1–3 months in a new aquarium with aquasoil, or when plants outnumber fish in your tank.

Can APT 1 be used in a tank without CO₂?

Yes. APT 1 is well-suited for low-tech aquariums without CO₂ injection.

Does APT 1 help control algae?

Yes. By withholding nitrates and phosphates, APT 1 reduces the risk of algae growth caused by excess nutrients — a common issue in fish-heavy or newly established tanks.

What is the difference between APT 1 and APT 3?

APT 1 contains no nitrates or phosphates and is designed for fish-heavy or new tanks. APT 3 provides full NPK nutrition and is designed for plant-heavy aquariums where the substrate alone cannot supply sufficient nitrogen and phosphorus.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 9361186534

Discover Niche Categories That Outsell low tech planted tank fertilizer

Top-Converting Item to Boost Your Average Order

4.5 ★★★★★
Based on 2223 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
N
Verified Purchase
Natascha
Pawtucket, US
★★★★★ 4
My Very First Juicer!
This was one of the worst buys ever! I couldn't have not bought a worse machine. The best this about it was that it has very few parts that are very easy to assemble, disassemble, and clean. Everything that could go wrong went wrong. I'm already looking for a new better one. I can't tell you how many times the top popped off well in the process of juicing or God forbid, if you just tapped it a tiny bit. Very annoying! It kept falling inside my freshly juiced juice. SMH. I'm giving it away to someone I don't like.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 15, 2023
M
Verified Purchase
M. Graham
Belleville, US
★★★★★ 5
Quick and easy process
Assurian protection plans are worth it. Simplified process to get it handled. When my portable blender broke, I followed the process and they sent me an electronic gift card and that was very easy to redeem good customer service. I’ve also taken it on other items, but I haven’t had to use those yet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2026
C
Verified Purchase
Carol PA
Omaha, US
★★★★★ 5
protection plan is easy.
The protection plan worked on my coffee pot. It was just over 14 months and started to leak. I first called amazon and they sent me a link to the protection plan. It was very easy to use. I received a Amazon gift card instead of a replacement. The price of the coffee pot had increased so you will receive the lower option. I did receive the total cost of the pot at the time I purchased it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026
B
Verified Purchase
Betty
Massapequa, US
★★★★★ 5
Great price & works fast.
Compact and fast - I love it! Could not beat the price and it's faster than my Food Saver!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2026
P
Verified Purchase
Patty
Boise, US
★★★★★ 5
Protection Plan
The process was easy and flawless
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026

recommand products