Seachem Renew

$2.64 ~~$4.19~~ In stock

Seachem Renew

Phosphate-free carbon substitute
High pore # for maximum organic removal
Ideal to use in planted tank or marine tank - does not leach phosphate
No impact on trace minerals and important nutrients

Renew™ is ideal for use in systems where phosphate released from all activated carbons poses a problem. Renew™ is also less aggressive than carbon, making it well suited for reefs and planted aquaria. It is also beneficial for use in soft water aquaria where the pH-raising property of many carbons is not an asset. Renew™ will remove organics and particulates in the sub-micron range; it will also help control ammonia, nitrates, and phosphates.

Sizes:

100ml
250ml
500ml

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Customer Reviews (4.3 / 5 · 4 reviews)

Emily ★★★★★ Oct 20, 2026

I finally switched from carbon to this phosphate-free substitute for my planted tank, and the clarity improvement is noticeable within a day. The fact that it doesn't leach phosphates means my plants aren't getting any hidden nutrients.

Emma ★★★★★ Oct 19, 2026

My tank water has never smelled fresher between water changes, and since it doesn’t leach phosphate, my plants are still thriving without any algae spike. The high pore count really seems to pull out the gunk my old carbon missed, and I love that trace minerals stay untouched for my shrimp.

Hazel X. ★★★★☆ Oct 21, 2026

The high pore count really makes a difference in water clarity compared to other media I've tried. Good to know I'm not stripping trace minerals from my planted tank either.