Sign in to unlock exclusive benefits
30-Day Free Returns*
Prime is the complete and concentrated conditioner for both fresh and salt water. Prime removes chlorine, chloramine and ammonia. Prime converts ammonia into a safe, non-toxic form that is readily removed by the tank's biofilter. Prime may be used during tank cycling to alleviate ammonia/nitrite toxicity. Prime detoxifies nitrite and nitrate, allowing the biofilter to more efficiently remove them. Prime also promotes the production and regeneration of the natural slime coat. Prime is non-acidic and will not impact pH. Prime will not overactivate skimmers. Use at start-up and whenever adding or replacing water. As part of their ongoing environmental stewardship efforts Seachem will donate a portion of the profits for every specially labeled edition bottle of Prime, Stability, Pristine, and Clarity (in Bonus Sizes of 325 mL -- 30% more) sold to a Rhino preserve in South Africa.

Great for cycling tanks. This company packages their orders better than most companies 🤩
Essential for every fish keeper!
Highly Recommended!
The detoxifies ammonia, nitrite, and nitrate, ensuring my fish stay happy and healthy. Truly AMAZED product!
The 2L size is perfect for my large tanks or frequent water changes. I've noticed a significant improvement in my fish's health and water quality.
This is a great product at a great price fast shipping also very pleased with everything I ordered from here will be ordering all my products from here .
Use code: WELCOME10
To Get Instant 10% Discount on Your First Order!
Screen reader optimized
Clear flashes & reduces color
More focus & fewer distractions
Assist with reading & focusing
Enhances website's visuals
Enter your email to claim your exclusive welcome discount.
For first-time customers only. We will send a verification code to your email.
We sent a 6-digit code to
Your code is ready to use. Apply it at checkout.
—
This referral discount is only available for first-time customers. Thanks for being a loyal shopper!
Loading subscription options…