NeoPlex Broad Spectrum Antibiotic
NeoPlex by Seachem Laboratories is a powerful broad-spectrum antibiotic that targets a wide range of external infections in both marine and freshwater fish. When used according to instructions, it will not cause water discoloration or harm the filter system. It is generally safe for invertebrates, though more sensitive species might experience stress.
Product Specifications
| Item | Quantity: 1 ea |
|---|---|
| Size | 0.4 oz |
| Application | External infections in fish (marine and freshwater) |
| Compatibility | Safe for invertebrates; may cause stress in sensitive species |
| System Impact | Does not cause water discoloration or harm filter system |
FAQ
Is NeoPlex safe for invertebrates?
NeoPlex is generally safe for invertebrates, though more sensitive species might experience stress.
Will NeoPlex affect the filter system or water color?
No, NeoPlex does not cause water discoloration or harm the filter system when used as directed.
Can NeoPlex be used in both marine and freshwater tanks?
Yes, NeoPlex is effective against external infections in both marine and freshwater fish.

Bernadette Carr –
Used NeoPlex after my guppy developed a white spot infection. The treatment worked quickly and didn’t affect water clarity. My fish recovered within 3 days. No issues with the filter or tank environment.
Lily Lawrence –
Tried it on a freshwater community tank with a sick angelfish. The infection cleared up in a few days. The product is easy to dose and doesn’t change water color. A reliable choice for external infections.
Anne Coleman –
My marine tank had a small shrimp showing signs of infection. After using NeoPlex, the shrimp improved within 48 hours. The product is safe and effective without disrupting the tank balance.