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With our recent tank crashes I was able to smell what "bad" live rock and live sand smells like and it is something that is very distinct. Live sand literally smells like rotten eggs, it is horrible. The live rock wasn't that bad, but the smell is pretty bad.
If you are going to go with a skimmer in a cube, from everything I have read/experienced go with the saphire. We tried the biocube ones and they are a piece of junk. You will lose space, but they work really well.
I kept a pair of clowns in a 12 gallon JBJ for over a year and they were fine. One in a 10 gallon is not a stretch at all (unless you are talking a clarkii or maroon that can get very large). Planning fish for a 12g is a bit tougher because obviously you don't have as much space. Take into...
Did you smell the rock? Cured live rock has almost no smell to it. When the "stuff" on the rock dies off you get a sulfer smell. This is kinda the quick test. If you are worried about it, throw it in a 55g with saltwater and add some instant cycle stuff, and it should be cured in a day or so.
I would love to put together tubes like that, I just don't think the landlady would be to thrilled.
The 12g is up and running, the pair of helfrichis are in and doing great. We also added a magnificent goby with a pistol shrimp. He is a bit more skittish, but I am sure he will settle down soon.
This is what I pulled off of marine depot:
Can I open the bag and separate the product to fit into my filter?
No, you should never cut open the bag and separate the product at all. The product ingredients do not mix evenly. If it is separated, you may not get the full benefits of the product...
Put the sand in a bucket, add some saltwater and move it around with your hands. The water will become dark brown/black, dump out the water and repeat until you don't see anything really dark coming out (you will always see some color due to the sand being agitated). You can do it all at once or...
We use chemi pure elite in all three of our tanks. It is almost a staple in the nano world for the back chambers of all in one nanos. I have never tested for silicates or anything like that but I do like it.
So finally got some pics of the helfrichi pair. Magnificent goby has made his home in a cave so tough to get pictures. Both fish ate very well tonight, magnificent made some stabs at the food so we will see.