BOYD Chemi Pure Blue 5.5 Ounce 156 Gram

This product is excellent for water clarity. Please read the packaging, because it states that it is packaged wet, and is made from low-dust high-grade carbon, so when you rinse it, you will find that there is hardly any residue from the material. My tank was cloudy until I put the bag in my sump, and the water cleared up in no time. Definitely value for money.

Good product, I thought my water was clear before I used this product however you can definitely notice a difference after using this product within 24hrs. I’ve seen some reviews regarding the fact the product was shipped “damp/wet” I am within the understanding that the product needs to be shipped like this. If you receive the product dry then send it back. Make sure you rinse the product before you use it. The instructions are clear in the product anyway. All in all happy with the product seems to be doing what it’s designed to do!

This stuff is unbelievable. The first time I brought some I put it in my filter and within matter of hours my fish tank very crestel clean water.so now I just brought another 1 allso I told my son about our good This stuff is and he as just sent for the stuff to try.he will be very happy with it as I explained to him. Its the best stuff I have ever used for my fish tank and I will continue to use it.i wood recommended any body to use it or try it at least so I am diffintley going to give this a 5 star.

WOW. I never knew a filter substrate this good could exist. No exaggeration, I put a bag of this inside my filter and the water has been crystal clear for months! I use this in my freshwater planted tank although its normally used in marine aquariums and I haven't needed to clean my aquarium at all. Everything just seems to cycle much better and no casualties fish wise. So impressed. Buy this, it will save you so much headache!

Yep 100% made a difference. Make sure you wash it first as per instructions and place it in the canister at the last point your water hits before going back into the tank. Within 8 hours I saw a difference in a clearer tank. Let’s see how long it lasts.

Brilliant stuff and makes the water crystal clear…even tho it’s also for freshwater it works better in a reef aquarium…. Highly recommend

Been using from the start alongside others , I wouldn’t stop using following successful reef keeping

The seal of the container was loose, it looked like it had been used previously as wet. It's too expensive, best to just buy carbon and rowaphos and put in a reactor.

El producto al abrirlo esta humedo, como si ya hubiera sido utilizado, al limpiarlo bajo el grifo no suelta el polvo del carbon como suele ocurrir en este tipo de productos. Decepcionado con el producto.

I used this for a month in my Innovative Marine Nuvo Abyss and it works great. So far it has been a little over a month and I haven't had to replace it. Crystal clear water with 0 nitrates and 0 phosphates.

This is a must-have for any aquarium filtration system! It helps keep nitrate levels low, improves water quality, and keeps the tank running smoothly. If you’re planning to add coral, this product is essential in my opinion. It really helps maintain a clean, healthy, nitrate-free aquarium. I love it so much that I have it on subscription — highly recommend!

Crystal clear water, low phosphate and nitrate levels and even strongly reduced heavy metal levels as confirmed by OES-ICP. In my tank it lasts for approx. 8-10 weeks.

Me funciona muy bien y tiene mi acuario perfecton