---
product_id: 470626942
title: "CrystalSkim 350 Surface Skimmer for Freshwater and Marine Aquariums – Compact Internal Filter for Film Oil and Debris Removal, Quiet, Adjustable Flow, Shrimp-Safe, for Tanks up to 92 Gal / 350 L"
brand: "oase"
price: "€ 94.02"
currency: EUR
in_stock: true
reviews_count: 12
category: "Oase"
url: https://www.desertcart.hr/products/470626942-crystalskim-350-surface-skimmer-for-freshwater-and-marine-aquariums-compact
store_origin: HR
region: Croatia
---

# 350 L tank capacity Ultra-quiet operation Adjustable flow rate CrystalSkim 350 Surface Skimmer for Freshwater and Marine Aquariums – Compact Internal Filter for Film Oil and Debris Removal, Quiet, Adjustable Flow, Shrimp-Safe, for Tanks up to 92 Gal / 350 L

**Brand:** oase
**Price:** € 94.02
**Availability:** ✅ In Stock

## Summary

> 💦 Elevate your aquarium’s vibe with the CrystalSkim 350 — where clarity meets quiet confidence.

## Quick Answers

- **What is this?** CrystalSkim 350 Surface Skimmer for Freshwater and Marine Aquariums – Compact Internal Filter for Film Oil and Debris Removal, Quiet, Adjustable Flow, Shrimp-Safe, for Tanks up to 92 Gal / 350 L by oase
- **How much does it cost?** € 94.02 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/470626942-crystalskim-350-surface-skimmer-for-freshwater-and-marine-aquariums-compact)

## Best For

- oase enthusiasts

## Why This Product

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

## Key Features

- • **Tailored Flow Control:** Customize skimming intensity with an adjustable flow rate to suit your tank’s unique needs.
- • **Engineered for Excellence:** German precision, Italian craftsmanship, UL-certified, and backed by a 3-year warranty.
- • **Shrimp & Nano Fish Friendly:** Fine intake slots and removable basket protect delicate livestock without compromise.
- • **Crystal-Clear Surface, Always:** Effortlessly removes biofilm, dust & floating debris for pristine water clarity.
- • **Gentle Yet Effective Circulation:** Built-in bottom outlet eliminates dead zones, promoting healthier aquatic environments.

## Overview

The OASE CrystalSkim 350 is a compact, energy-efficient surface skimmer designed for freshwater and marine aquariums up to 92 gallons (350 L). It removes surface biofilm, floating debris, and dust to enhance water clarity and oxygen exchange. Featuring an adjustable flow rate and a floating intake ring, it maintains consistent skimming even on uneven surfaces. Its built-in bottom outlet improves water circulation by targeting low-flow zones. The removable collection basket with fine slots ensures safety for shrimp and small fish. German-engineered and Italian-made, it operates quietly and is backed by a 3-year warranty.

## Description

The OASE CrystalSkim 350 removes biofilm, floating plant matter, and dust from the water surface to improve oxygen exchange and maintain crystal-clear water in your aquarium. A built-in bottom outlet improves circulation in low-flow areas, while the removable, collection basket protects small fish and shrimp. Designed for freshwater and saltwater tanks up to 92 gallons (350 L), the surface skimmer features an adjustable flow rate and a floating intake ring for consistent performance, even in uneven setups. Compact, quiet, and easy to install with suction cups, CrystalSkim is German-engineered, Italian-made, UL-certified, and backed by a 3-year warranty.

Review: This is an incredible skimmer for the price! - This product works absolutely amazingly. I bought it for my turtle tank because their skin sheds over time and creates a nasty film on the surface — this skimmer cleared it right up. It feels durable, completely safe for the turtles, and the suction cups are way stronger than I expected (much better than the weak ones on other gear I own). On top of that, it’s dead silent and took me maybe five minutes total to assemble and give a quick pre-use clean. Couldn’t ask for better performance.
Review: Pobably the best suface skimmer for most systems. - The best tip is to read the instructions! It will tell you how to install and adjust the flow. Choose the lowest flow during the installation. That will help you to adjust the place you will install according to the water surface and avoid the skimmer to suck air. Then, if you wish, you can adjust to a higher flow slowly. The outlet of the water is on the bottom of the unit, so that's another reason to have the flow on low in the beginning, to observe the substrate you have on the bottom of the tank. If you put the flow too high and the skimmer is located too close to the substrate, in a low/small tank, for example, you will blow the substrate off! The skimmer doesn't need much flow to operate amazingly! I have it on the lowest flow setting for my 75 gallon tank. It will remove the surface scum in couple of minutes! It's construction is perfect and it works amazingly when installed correctly! The included tweezers is to remove the top grid protection and the blue sponge inside to clean. I am not going to use the skimmer with the included suction cups. I used some cable ties and attached it to magnets. The wire is long!! Very nice! I love this product!! If you follow my instructions in regards to the low flow in the beginning you will not have the micro bubble problem some people observed and complained. One last tip: make sure you aquarium is on constant water level, replacing the evaporated water daily, to make sure the skimmer won't suck air when the water level drops due to the evaporation! This skimmer is one of the very best I've tried, if not the best. Much easier to clean than all the others I've tried! love it!

## Features

- QUICKLY CLEARS SURFACE DEBRIS – Removes biofilm, floating plant matter, and dust from the water’s surface to improve water clarity and support healthy oxygen exchange. Designed for use in both freshwater and marine aquariums.
- IMPROVES WATER CIRCULATION – In addition to surface skimming, the built-in bottom outlet creates gentle flow in low-circulation zones where debris tends to collect. This helps reduce dead spots and supports overall tank health.
- ADJUSTABLE FLOW & FLOATING RING – Customize skimming performance with an individually adjustable flow rate. The floating ring automatically adapts to changes in water level, maintaining consistent surface cleaning even when the unit isn’t perfectly level.
- SAFE FOR SHRIMP & SMALL FISH – A removable collection basket with fine intake slots protects delicate livestock while capturing the smallest particles that nets can’t remove. Ideal for planted tanks and aquascapes with shrimp or nano fish.
- RELIABLE QUALITY & BACKED BY WARRANTY – For aquariums up to 92 gallons (350 L). Italian-made, German-engineered, UL-certified, energy-efficient, and backed by a 3-year warranty.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BFFY1ZGF |
| ASIN  | B0BFFY1ZGF |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #18,178 in Pet Supplies ( See Top 100 in Pet Supplies ) #72 in Aquarium Filters |
| Brand Name | OASE |
| Color | Grey |
| Customer Reviews | 4.1 4.1 out of 5 stars (649) |
| Date First Available | September 15, 2022 |
| Date First Available  | September 15, 2022 |
| Directions | As directed on box |
| Included Components | Aquarium heater, holder with suction cups and integrated post calibration tool, and power cord |
| Item Package Dimensions L x W x H | 6.57 x 5.28 x 2.2 inches |
| Item Weight | 12.5 ounces |
| Item model number | 86944 |
| Item model number  | 86944 |
| Manufacturer | OASE |
| Manufacturer  | OASE |
| Model Name | CrystalSkim 350 Skimmer |
| Number of Items | 1 |
| Package Dimensions  | 6.57 x 5.28 x 2.2 inches; 12.56 ounces |
| Size | Crystalskim 350 |
| Specific Uses for Product | Behavior |
| Target Audience Keyword | fish aquarium |
| Warranty Description | 3 year warranty plus 1 year warranty extension with online registration |

## Images

![CrystalSkim 350 Surface Skimmer for Freshwater and Marine Aquariums – Compact Internal Filter for Film Oil and Debris Removal, Quiet, Adjustable Flow, Shrimp-Safe, for Tanks up to 92 Gal / 350 L - Image 1](https://m.media-amazon.com/images/I/61CFWVbJ0OL.jpg)

## Questions & Answers

**Q: Hi just bought mine less than a month ago and the electrical component of the skimmer stopped working. Anyone have suggestions?**
A: Hello Maddi,
Thanks for asking!
If the impeller has been cleaned and there are no blockages, try contacting the manufacturer for suggestions.
Atlantic-Oase 330-274-8317
Dana at Practical Garden Ponds, 484-237-2080, Ext.1

## Customer Reviews

### ⭐⭐⭐⭐⭐ This is an incredible skimmer for the price!
*by S***K on September 28, 2025*

This product works absolutely amazingly. I bought it for my turtle tank because their skin sheds over time and creates a nasty film on the surface — this skimmer cleared it right up. It feels durable, completely safe for the turtles, and the suction cups are way stronger than I expected (much better than the weak ones on other gear I own). On top of that, it’s dead silent and took me maybe five minutes total to assemble and give a quick pre-use clean. Couldn’t ask for better performance.

### ⭐⭐⭐⭐⭐ Pobably the best suface skimmer for most systems.
*by A***. on February 26, 2024*

The best tip is to read the instructions! It will tell you how to install and adjust the flow. Choose the lowest flow during the installation. That will help you to adjust the place you will install according to the water surface and avoid the skimmer to suck air. Then, if you wish, you can adjust to a higher flow slowly. The outlet of the water is on the bottom of the unit, so that's another reason to have the flow on low in the beginning, to observe the substrate you have on the bottom of the tank. If you put the flow too high and the skimmer is located too close to the substrate, in a low/small tank, for example, you will blow the substrate off! The skimmer doesn't need much flow to operate amazingly! I have it on the lowest flow setting for my 75 gallon tank. It will remove the surface scum in couple of minutes! It's construction is perfect and it works amazingly when installed correctly! The included tweezers is to remove the top grid protection and the blue sponge inside to clean. I am not going to use the skimmer with the included suction cups. I used some cable ties and attached it to magnets. The wire is long!! Very nice! I love this product!! If you follow my instructions in regards to the low flow in the beginning you will not have the micro bubble problem some people observed and complained. One last tip: make sure you aquarium is on constant water level, replacing the evaporated water daily, to make sure the skimmer won't suck air when the water level drops due to the evaporation! This skimmer is one of the very best I've tried, if not the best. Much easier to clean than all the others I've tried! love it!

### ⭐⭐⭐⭐ Works Well for Biofilm, Constant Cord Adjustments
*by K***Y on November 24, 2025*

I maintain several planted freshwater aquariums with a variety of aquascapes, and I own a few of these surface skimmers. This model has a nice adjustable flow, runs fairly quietly, and does an excellent job clearing biofilm from the water’s surface. However, it has a frustrating habit of catching on its own power cable, causing the unit to sit too high or too low in the water—both of which make it ineffective. I often have to fiddle with the cord and reposition the floating ring to keep things working smoothly. Still, for the price, it’s a solid value—just wish the cord management was better designed.

## Frequently Bought Together

- OASE Indoor Aquatics CrystalSkim 350 Skimmer
- PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic
- API ROOT TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-22*