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Coral bones that is!


And why would anyone want a bag of coral bone rubble?

Well the olde timers will tell you that it has great surface area and keeps the pH nice and high/stable.

This makes it well suited for heavily stocked tanks that are otherwise prone to pH crashes.

Heavily stocked cichlid tanks and goldfish ponds are 2 such examples.

They are also a proven marine sump filler. Given time to mature they will also become colonized with nitrate eating microbes.

A nifty trick is to place some into a mesh box or floating breeder box. You can then add in corals like morphs that have become detached. Once they attach to a bit of rubble, you can then glue/putty that rubble back onto your scape.

We have a couple of brands of coral rubble, but the 2 most popular buys are the 10kg serenity stuff.

3-5cm rubble

5-8cm rubble

Depending on the filter style it can be a good idea to put it into mesh filter bags. This makes moving it around or cleaning it much easier. This is especially true when used in sumps.

If you use the zipper style ones, its a good idea to remove metal parts before using them in a marine tank. A zip tie is the perfect way to close up a bag after the zipper has been cut off.

A bag also contains smaller bits and prevents them migrating around the filter.

+ $35 for 10KG! Cheap as chips bio media.

+ Good surface area. Great for canister filters.

+ Easily maintain a high pH without needing special sand/gravel, or using texas holey rock. Opens up your scape options a lot.

+ Great area for pods to breed in reef tanks.

+ Suitable for marine UGF.

+ 10% more manly than other available filtration options.

- Natural product so individual bits with vary in surface area and size.

- Some bits can be sharp and cut media bags if shaken roughly.

- Unsuitable for low pH aquariums.

- Not as pretty as rings, marine pure or K1.

Edited by ageofaquariums
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