I have been buying activated carbon for 15 years. I've tried really expensive products and as far as I can tell they all do the same thing. The more expensive product is crushed into small pieces while it is in the form of granules. One day I'll try to break it down to see if it makes a difference, but I seriously doubt it will. That's a great price, I paid 3.99 per bag. I ordered 5 bags at once to save on shipping. (it was 5.99 no matter how many packs you buy) That lasts me a whole year and all for less than $30! ______________update______________Just for fun, I "blended" the packet in my wife's Kitchenaid blender. He did a pretty good job crashing all the PCs. to no more than a little more than 1/8 inch. This creates about 10% waste as some of it turns into dust (no more than 5 seconds). I've experimented with this in several tanks and as far as I can tell it makes the charcoal more effective or more specifically more aggressive at removing discoloration or odors. So I'll keep playing with this, but the smaller broken bits seem best for emergency cleaning if you wait too long between water or a filter. I'd also venture to say that because the smaller particles act faster, they're likely to "fill up" or deplete their cleaning power much quicker. Sellers on Revain ship at a fixed price and some ship on an item basis. When I buy multiple items, I add one item from each seller to my cart and then see which one offers the best value for money. Last time I bought them from the cheapest seller it was under $4 with flat rate $7 shipping, at that price I bought the annual cost. It's a bit of a headache, but if you're buying more than one it's worth it if you save a few bucks.
Humidifier / air purifier "Fanline Aqua VE400" with an ionizer, with a capacity of 410 gr/h
44 Review
🌿 Enhance Your Freshwater Fish Tank with Greenpro Java Fern on Driftwood Live Aquarium Plants
27 Review
KEDSUM 330GPH Ultra Quiet Submersible Pump With High Lift And Grounded Power Cord - Ideal For Fish Tanks, Ponds, Aquariums, Statuary, Hydroponics - Includes 3 Nozzles And 1500L/H Water Flow
39 Review
Sink filter Prio New Water Start Osmos OU380 white
79 Review
Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
26 Review
🧲 Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review
Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review
Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
37 Review