Fluval Flex Prefilters (9 & 15 Gal)

Here are a few options for a concise English product description, keeping the core information from the original:

**Option 1 (Most direct):**

> Keep your shrimp and fry safe with these easy-to-install filter boxes. They prevent small aquatic life from entering your filter. Simply push clips into the grate and slide the box down to install. Media can be accessed by pressing the top or removing the entire box for convenient cleaning.

**Option 2 (Slightly more descriptive):**

> Protect your aquarium’s smallest inhabitants. These prefiltration boxes keep shrimp and fry safe by preventing their entry into the main filter. Installation is straightforward: attach by pushing clips into the grate and sliding the box down. Cleaning is convenient, with easy access to media or the entire unit.

**Option 3 (Focus on benefits):**

> Ensure the safety of your shrimp and fry with our simple prefiltration boxes. Designed to keep them out of your main filter, installation is as easy as attaching clips and sliding the box into place. The design allows for quick and convenient cleaning of the media or the entire unit.

Choose the option that best fits the overall tone and space constraints of your listing.