Sand?

Pacific Blue

Blue Ring
Registered
#1
Ok so the last octo I kept was in a fairly empty tank just some shells ect nothing on the bottom of the tank. What kind of sand should I be using? I know coral gravel is far too course for there senstive skin. I was thinking sugar sand would be a good option. Is this to sharp? Is there a good grit to feel ie rubbing it between my fingers? The other problem is that my tank return is through the bottom in an reverse under gravel filter set up. I want to enshure that it is not going to be too restrictive of the flow. Any thoughts on aquascapeing? I have a tall 130 gallon tank for a not so large octo.

Pacific Blue :boat:
 

cthulhu77

Titanites
Supporter
#3
If your return is under a plate, you are going to have some problems with sand...I use beach sand ( comparable to 80 grit silica), but have returns that are above the substrate...you might be stuck with gravel...

greg
 

Nancy

Titanites
Staff member
Moderator
#5
I spent some time on the phone with the Carib Sea people about this question.

They make a very fine sand Aragamax that's almost like mud. There is one with slightly larger grain size caled Aragamax select. Both are considered "sugar sized" with a grain diameter of 0.2 to 1.2 mm. Neither would have sharp edges and are recommended for sharks and rays. Another slighly larger size grain in offered in the Special Grade Reef sand (1.25 -1.95mm )

The live sand costs more, but even if you don't need live sand, it can be an advantage because you don't have to wash it for an hour. They offer Bahamas Oolite, Fiji Pink, and Special Grade Reef sand - these don't have sharp edges.

Colin has a good suggestion about mixing the grades. I'm going to mix Fiji Pink with the Special Grade Reef Sand.

Nancy
 

chrono_war01

Colossal Squid
Supporter
#7
Um..Quite bad in Hong Kong, they don't have any info on anything, most of the personal aquariums only contain a simple filter, air pump and some sharp hard yucky disguting coral shards, they're not even sand...
 

Pacific Blue

Blue Ring
Registered
#10
Hey good advice, I think I will go with a 50/50 mix of sugar sand/ coral gravel. My under gravel is made out of egg crate and fine window mesh so I dont have to worry about the sand falling through. I am looking at cold water species (O. Rubecens) so perhaps the wont dig as much.

Pacific Blue :Boat:
 

chrono_war01

Colossal Squid
Supporter
#11
um...

This should be interesting..but I have bought myself one of those, um...newbie tank..I'll start a new thread soon on my dumb * developments, but the tank is soo small, and the filter system only contains a wheel (with a DIY bacteria kit) a airpump which lanuches bubbles the size of olives and the filter system is a overhead, sucks water from surface and puts it back on the surface....the air pump is just a tube contacted with a out let at the bottom.... :mad:
 

Nancy

Titanites
Staff member
Moderator
#12
Pacific Blue, O. rubecens is a nice size and a very pretty octo, but I've come across several references to them biting a little more than other octos.

I was visiting where they were keeping this species last year (the octos were young, about the size of a tennis ball) and sure enough, one of them bit the person who was handling them! Not a bad bite, though.

Nancy
 

cthulhu77

Titanites
Supporter
#13
the big problem with undersand plates is that of anaerobic decay...if you put sand on top of a screened in filter plate, you can end up with "dead spots" that can quickly overtake a filter system and crash a tank...don't go too fine with the sand mixture !!!

greg
 

chrono_war01

Colossal Squid
Supporter
#14
huh>

Huh, what? So, filter systems aren't suppose to go overhead and dump water in?
So, it's suppose to filter from the bottom, s..t I didn't know my tank was that newbish...
 

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