Deep sand bed

[Jpeter]

I just set up a 36 gallon tank with 2 inches of sand and after learning how a DSB works I want to add two more inches.
I set the tank up 4 days ago can i add two more inches or should i just add one and wait a week then the other inch.

[Jpeter]

so no little hermit crabs

[chevyjaxon]

dsbs are imo awesome. anerobic bacteria contained in there feeds of nitrates which is great because not only does the sand look nice, you get the extra added bonus of extra system stability. at a price that nobody can complain about. 6 years ago when I started my tank i put in an oolitic dsb. its always white and has never caused me any issues. by taking a look at how mother nature sets up her oceans and if we follow her formula making a strong stable aquarium environment is an easy process. at the end of the day there are several different opinions, not one of them is all wrong or right. its a matter of your own personal preferance for your own tank.

[chevyjaxon]

too add though it should be noted that once a dsb is placed one should not stir it much if at all, its fine to add critters to do it for you, they simply feed off the detritus however a dsb can contain toxic ammonia which will cause problems if stirred.