Silica sand? [yes I've searched....]

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David R

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Apr 26, 2005
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New Zealand
Recently I've taken a liking to all the tanks I see here with white sand substrates. I want to switch from gravel in my 80g to white sand before I set my 160g up so I can see how/if it will affect the colour of my ornate and dats. In the 80g I have the ornate, 3 dats, a group of clown loaches, uarus, a sevrum and a flagtail. The ornate, dats, sevrum and flagtail will be going into the 160g, along with a tyre track eel from another tank (once its big enough).
I was looking at a landscaping supplies place yesterday and the only white sand I can find is silica sand, which is very fine. Both tanks are filtered by a wet/dry sump set up, so I'm not worried about the sand getting into the filters. I've just finished reading countless threads on sand, mostly to do with rays. Some people say the silica sand can irritate the rays, will it be alright with the fish I'm keeping?

Don't bother suggesting 'pool filter sand', I think the stuff we get here must be different to the stuff in the US, its more of a grit than sand (kinda half way between sand and gravel) and is grey in colour. I've used it before and it works fine andlooks ok, but I want something white.

Thanks
 
The reason it's not recommended for rays is due to the sensitivity of the rays' skins. Rays like to bury themselves, and therefor are more susceptible to irritations from the silica sand. Silica sand, although it looks smooth to us, is actually very sharp. It would be like us swimming on a beach made of tiny bits of broken glass.

As far as your other fish are concerned, they should be fine. Actually, some aquarists will actually keep some hardier species of rays in tanks with silica substrate, though the majority warn against it.
 
Hawkfish3.0;1673321; said:
The reason it's not recommended for rays is due to the sensitivity of the rays' skins. Rays like to bury themselves, and therefor are more susceptible to irritations from the silica sand. Silica sand, although it looks smooth to us, is actually very sharp. It would be like us swimming on a beach made of tiny bits of broken glass.

As far as your other fish are concerned, they should be fine. Actually, some aquarists will actually keep some hardier species of rays in tanks with silica substrate, though the majority warn against it.
isn't beach sand silica sand? i don't know that's just what I learned in Marine biology and oceanography class.
 
I could be completely off here, as I'm no expert, but I believe that silica sand is manufactured. Even if beach sand IS silica, it is most likely smoothed out by the constant shifting from the flow of water that washes over it.
 
Hawkfish3.0;1673452; said:
I could be completely off here, as I'm no expert, but I believe that silica sand is manufactured. Even if beach sand IS silica, it is most likely smoothed out by the constant shifting from the flow of water that washes over it.
Bet you're right. didn't know there was manufactured silica sand. I've had the same gravel for years. what if someone wanted to put beach sand in their aquarium?

boil and rinse like with gravel and driftwood?
 
I would say so. I take it you live near one of Florida's white beaches then?
 
Hawkfish3.0;1673533; said:
I would say so. I take it you live near one of Florida's white beaches then?

bout an hour drive, but with the cost of gas and time invested, would it be worth it?

if I found a piece of driftwood, hell yeah!

hell a trip to the beach is worth it in itself.

we also have natural limestone springs. maybe I'll collect water from there for my upcoming 75g. lol
 
pcfriedrich;1673549; said:
bout an hour drive, but with the cost of gas and time invested, would it be worth it?

if I found a piece of driftwood, hell yeah!

hell a trip to the beach is worth it in itself.

we also have natural limestone springs. maybe I'll collect water from there for my upcoming 75g. lol

Given the current cost of gas, I would make a trip to your local home improvement store and buy some silica sand for around $5-7 for a 50lb. bag.

But, if you want a day at the beach, go for it! As mentioned above, be careful of pieces of seashell in the sand. Unless you have an extremely low pH already, shell could raise your pH out of the acceptable range for SA/CA cichlids.
 
The primary constituent of natural sand is silica. Silica is simply broken down quartz, that's why it's inert. I run silica sand in my tanks (50 grit (I think) sandblasting silica sand) and have never had a problem. It doesn't seem to affect my cory's barbells, and my rams love to dig in it and move it around. As with other substrates you should wash it out before use.
 
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