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%

Pay in installments of $6.57 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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

4.4 ★★★★★
Based on 24 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
G
Verified Purchase
G
Lowell, US
★★★★★ 5
The pooch is on Cloud No 9
Color: Blue
Lucky loves everything about this (blue) octopus. It has squeakers in all the right places and the crinkle sound adds to his fun. He’s almost 70lbs and extremely strong, and can be an aggressive player and chewer. So far, it has held up extremely well for the tug-of-war games and crazy shaking play. It’s well worth the money. I also want to mention that this toy is true to size. I have too often ordered dog toys that turned out to be much smaller than advertised.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
C
Verified Purchase
crackinwall
Massapequa, US
★★★★★ 5
Dog loves snakey!
Style: Rainbow Snake
Is great for play loving dog..with gentle mouth. Surprisingly, it has really held up after tons of tugging. I didn’t think it would bc is not heavy duty material or stitching, rather is soft & light weight. Has plenty of squeakers too! - Darker colors would be nice! Human preference. :)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2024
B
Verified Purchase
Beverly Quarles
Bozeman, US
★★★★★ 3
Poor quality and materials
Style: Rainbow Snake
I bought this for my 8 week old German Shorthaired Pointer puppy. Within 24 hours the majority of the squeakers were dead, and about 1/3 of the squeakers had been removed. The material is not strong and easily ripped open. I gave 3 stars because my puppy liked the toy, but the quality was not good. I expect to be throwing this toy in the garbage by the end of the week.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2025
V
Verified Purchase
Veronica M
Louisville, US
★★★★★ 4
Here for a good time, not a long time
Style: Rainbow Snake, Style: Rainbow Snake
Our puppy loved his snake. Within 10 minutes he already had one of the squeakers out! Not very good quality for the price in my opinion. 6 weeks later and every squeaker is out and all the stuffing! He still plays with it even though it is just a piece of cloth now. I gave it 4 stars because he still loves it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
C
Verified Purchase
Carolann Gemski
Omaha, US
★★★★★ 1
Quality has gone down from previous ones
Style: Rainbow Snake
I've bought two of these - my dog goes crazy for them! She's only 12 lbs and not a big chewer. The first one lasted a few years, before the squeakers gave out and the seams opened (I got that one at Marshall's). The second one I got more recently on Amazon. It fell apart in just a few weeks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 11, 2025

recommand products