---
product_id: 599941036
title: "Slim Aquarium Filter, Quiet Fish Tank HOB Filters for up to 5 Gallon Aquariums, Adjustable Flow, 42 GPH, 3W"
brand: "nicrew"
price: "€ 58.99"
currency: EUR
in_stock: true
reviews_count: 5
category: "Nicrew"
url: https://www.desertcart.hr/products/599941036-slim-aquarium-filter-quiet-fish-tank-hob-filters-for-up
store_origin: HR
region: Croatia
---

# Adjustable 42 GPH flow Slim & compact design Ultra-quiet operation Slim Aquarium Filter, Quiet Fish Tank HOB Filters for up to 5 Gallon Aquariums, Adjustable Flow, 42 GPH, 3W

**Brand:** nicrew
**Price:** € 58.99
**Availability:** ✅ In Stock

## Summary

> 🐟 Elevate your nano tank game with silent, smart filtration!

## Quick Answers

- **What is this?** Slim Aquarium Filter, Quiet Fish Tank HOB Filters for up to 5 Gallon Aquariums, Adjustable Flow, 42 GPH, 3W by nicrew
- **How much does it cost?** € 58.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/599941036-slim-aquarium-filter-quiet-fish-tank-hob-filters-for-up)

## Best For

- nicrew enthusiasts

## Why This Product

- Trusted nicrew brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Setup:** Comes complete with all essentials for effortless installation and maintenance.
- • **Smart Auto-Restart:** Patent-pending self-priming system ensures seamless recovery after power interruptions.
- • **Sleek Minimalist Profile:** Discreetly fits nano tanks up to 5 gallons without cluttering your space.
- • **Whisper-Quiet Filtration:** Keeps your aquatic friends calm with near-silent water flow and adjustable speed.
- • **3-in-1 Superior Filtration:** Mechanical, chemical, and biological filtration for crystal-clear, healthy water.

## Overview

The NICREW Slim Aquarium Filter is a compact, quiet, and efficient HOB filter designed for aquariums up to 5 gallons. Featuring a patent-pending self-priming system with auto-restart, adjustable flow rate of 42 GPH, and a 3-in-1 filtration cartridge, it ensures superior water quality while maintaining a low profile. Ideal for shrimp, bettas, and other delicate fauna, it offers easy installation and maintenance, making it a top choice for nano tank enthusiasts.

## Description

The Nicrew Slim Aquarium Filter is a great filter option for nano tanks. Designed to be used for tanks up to 5 gallons (20L), this filter is beginner-friendly and cost-effective. It features a compact and slim shape that is ideal for hobbyists with limited space. 3-in-1 filter cartridge provides mechanical, chemical and biological aquarium filtration for superior water quality while unique waterfall design enables filtered water to return to the tank silently, gently breaking the surface tension and creating beneficial oxygenation. So it is ultra quiet and won't disturb the fauna. If power is interrupted and restored, its priming system permits restart automatically. The filter also comes equipped with a flow control valve so you can adjust the water flow according to your aquarium needs. Installation and maintenance are quick and convenient, making this filter an ideal setup for freshwater or saltwater aquariums.

Review: This product is one of the worst products I have bought. If you need my evaluation, I will give it a bad evaluation because it broke down in the first week and when I started using the product, it was very hot. I do not advise people to buy it and I advise them to buy any other product.
Review: The carbon filters it comes with are crap, HOWEVER if you buy a separate roll of filter floss for 10 bucks and cut it into 170 pieces and drape it inside (like i show in the photo.) you can filter your water for only 7 cents a week. KEEP the black bio filters deep inside, (for good bacteria) do not buy carbon replacement filters, buy filter floss and you have a fantastic little filter for a very small 5 gal tank. I also added a plant for additional filtration, but ONLY do that if you check your filter daily as roots can jam it and that could be dangerous (so don't copy me there =p) Great tiny filter, very quiet!

## Features

- Slim and compact design, hardly noticeable on the tank, great choice for nano and pico tanks up to 5 gallons.
- Quiet operation with adjustable flow, doesn't overly disturb the fauna, perfect for shrimp or betta.
- Patent pending self-priming system, auto restart if power is interrupted and restored.
- Comes with everything you need right out of the box for easy setup and use.
- What's included: Filter body, intake tube, extension tube, intake sponge, and filter cartridge.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CGN1TV1G |
| Best Sellers Rank | #73,008 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,143 in Filters (Pet Supplies) |
| Item Dimensions LxWxH | 8.9 x 7.4 x 18.5 Centimeters |
| Item Weight | 300 g |
| Item model number | N83251 |
| Manufacturer | NICREW |
| Net Quantity | 1.0 Count |
| Product Dimensions | 8.89 x 7.37 x 18.54 cm; 300 g |

## Images

![Slim Aquarium Filter, Quiet Fish Tank HOB Filters for up to 5 Gallon Aquariums, Adjustable Flow, 42 GPH, 3W - Image 1](https://m.media-amazon.com/images/I/61A1ENvv+bL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Does the filter tube extend? Does the water have to be filled to the top to use?**
A: Yes, it includes the additional tube to extend. It will be better to fill filter case completely with water before it starts. Otherwise, it will take some time to pump water up. (Water must at least cover the motor.)

**Q: What if the filter doesn't start or makes a mechanical noise?**
A: Try to turn the impeller by hand. Check to see if something is jammed in the impeller. Rinse impeller and filter to remove blockage.

**Q: After a powerout, will this filter restart on its own?**
A: Yes, the motor will restart by itself once the power turns on.

**Q: Can I use this in a turtle tank?**
A: It is not recommended for turtle tanks.

**Q: Does this filter fit on a framed aquarium?**
A: Yes, you need to gently pull the intake tube to hang on your framed aquarium. The width between intake tube and housing is 0.4 in.

## Customer Reviews

### ⭐ Review
*by A***I on 5 August 2025*

This product is one of the worst products I have bought. If you need my evaluation, I will give it a bad evaluation because it broke down in the first week and when I started using the product, it was very hot. I do not advise people to buy it and I advise them to buy any other product.

### ⭐⭐⭐⭐⭐ Review
*by D***E on 16 January 2026*

The carbon filters it comes with are crap, HOWEVER if you buy a separate roll of filter floss for 10 bucks and cut it into 170 pieces and drape it inside (like i show in the photo.) you can filter your water for only 7 cents a week. KEEP the black bio filters deep inside, (for good bacteria) do not buy carbon replacement filters, buy filter floss and you have a fantastic little filter for a very small 5 gal tank. I also added a plant for additional filtration, but ONLY do that if you check your filter daily as roots can jam it and that could be dangerous (so don't copy me there =p) Great tiny filter, very quiet!

### ⭐⭐⭐⭐⭐ Review
*by S***N on 24 November 2025*

This filter works perfect for a little Top Fin 3 gallon tank. I have a small tank set up for Corydora fry and needed a decent filter with an intake pipe. The filter that came with the aqaurium was trash, and I did not like it. It pulled from the bottom and kept sucking fry up. The first replacement filter that I got did not have a place for carbon or any type of sponge. This one is seriously perfect. It has a carbon cartridge with a sponge and also a sponge filter for the intake. It helps pre-filter AND keeps from sucking anyone up. The replacement cartridges are not expensive (6 for $9.99 or 12 for $14.99). It is very easy to clean and does not make any splashing sounds. It has a big enough area to add your own media, if needed. The carbon keeps everything circulating to avoid any funky smells. *I just put it in before taking photos, so the tank is not the cleanest.

## Frequently Bought Together

- NICREW Slim Aquarium Filter, Quiet Fish Tank HOB Filters for up to 5 Gallon Aquariums, Adjustable Flow, 42 GPH, 3W
- NICREW Slim Aquarium Filter Cartridges (6 pcs) with Intake Sponges (2 pcs)
- DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-20*