Silicate sand, and yes I am insane

SeymourDuncan

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SO! in my beginnings, I read more stuff than I ever thought I would. In my research I found that aragonite sand is what you are "supposed" to be using. At the same time I read that it is beneficial to dose silica, as it is used by alot of organisms. Well that made me think...with all the hype about NOT using Silica sand, I came to the conclusion that people with Diatom Problems just dont have the proper clean up Crew.

Well, I took matters into my own hands as a C+ chemistry student. I went ahead and made the choice of setting up an 8 inch sand bed of Ace Hardware White Play sand. It is Extremely fine grade and very appealing. During the cycle I had a Diatom bloom that was 10x what it was on my Aragonite sand. However, after the bloom, it was perfectly white. This is because the first fish I added were Mollies, along with Turbos, Nassarius, and the various hermits and urchins. Since the sand went white, it has stayed white, and every diatom that starts gets immediately eaten.

I do not have a silica test kit, but every other level I test is perfect. I have had the silica sand set up for over a year and the fish love it. Conchs burry themselves down to the bottom, the eel I had and the yellow wrasse loved it! The only downside I have had was that the fine grade sand when mixed with powerhead loosing its suction cup makes for a very cloudy day. haha.

I have heard of previous success with this sand, so I am just adding to the De-Bunking of the Silica sand Myth. It is not for everyone, but i will always use it when the bed calls for white.

If anyone has experiences like this with means to test for silicates, I would be very curious to compare levels with that of a tank that gets dosed. Other than that, this is my way of adding a natural food that also will clean my water, and the finer the sand, the better my results have been. My sump is a 55 with 8 inches of sand, Mangroves, and chaetomorpha. A skimmer is used on weekends, but not really as necessary with all the nutrient export I get from my Fuge. I have not had yellow water from the trees yet, but its been less than a month since I added them.

I am not saying that aragonite does not have a place, but you dont necessarily have to buy it when silica sand is just fine. I would NEVER recommend pool filter sand based on aesthetics. My friend got some and HOLY CRAP did it look bad. It was like particles of glass rather than the fine sand That looks amazing.

However, if you do Aragocrete, you MUST use Aragonite. Otherwise it would be Silacrete, and turn brown.

A good thing to do if you want to reduce the diatom bloom is to rinse the sand in hose water, then store it in some ro water for about a week with a plant light, it will make a pretty quick thick bloom and then you hose it again. I noticed that the bloom was cut in half when I did this.
 
Any truth to the myth that silicate sand is too sharp for some invertebrates or sand sifters, or investigated into it at all?
 
Any truth to the myth that silicate sand is too sharp for some invertebrates or sand sifters, or investigated into it at all?

I have successfully had Dragonets and they spit it right out of their gills with no problem, you have to get the smoothest kind though. Most silica is sharp and Can harm fish. If Ace has any in stock now, i will get the Exact name of it and UPC. I have never seen a single sign of this sand in particular harm anything, but it will scratch the glass if your scraper falls into it...So keep up on that at least. I had A Pencil urchin and he would eat the sand and poop (Technical term) it out just fine. I would assume that if it was sharp, he would have died after so long. Now microscopically, silica is always going to be sharp unless its melted into little marbles. Im not sure, but Pool sand might not be sharp...I would have to check on that, but it looks terrible IMO, so I never tested it.
 
Hey Warlock - the advantages of silica sand are more than just cost - you'll probably find that it is easier to maintain elevated levels of alk, calcium and pH as the buffer point of aragonite is below where we typically want to keep our tanks.
It will not solidify in DSBs, it will pack a little tighter though. And as you point out diatoms are a food source - although I don't think you'll find that the sand will fuel any explosion in diatoms - beyond the initial break in period. It depends on the feldspar content.
I also believe that you'll find phosphate contamination of the sand bed will be significantly reduced. - although the sand will still also not serve as a sink - it won't remove phosphate with elevated pH the way aragonite will.

I for one never found any credible evidence of the sharp edges being detrimental to livestock. All evidence in this respect in anecdotal and contradictory.

Congrats on thinking out of the box and giving it a go...
 
Hey Warlock - the advantages of silica sand are more than just cost - you'll probably find that it is easier to maintain elevated levels of alk, calcium and pH as the buffer point of aragonite is below where we typically want to keep our tanks.
It will not solidify in DSBs, it will pack a little tighter though. And as you point out diatoms are a food source - although I don't think you'll find that the sand will fuel any explosion in diatoms - beyond the initial break in period. It depends on the feldspar content.
I also believe that you'll find phosphate contamination of the sand bed will be significantly reduced. - although the sand will still also not serve as a sink - it won't remove phosphate with elevated pH the way aragonite will.

I for one never found any credible evidence of the sharp edges being detrimental to livestock. All evidence in this respect in anecdotal and contradictory.

Congrats on thinking out of the box and giving it a go...

I have had all around success with this sand. I really dont dose anything but Reef Accelerator and I honestly rarely do water changes. I top off with RO and I add 5gallons (in a 200g system) every 2 weeks at minimum, sometimes every month. As far as PH, I rarely ever notice a change. I dont do Reverse lighting on my sump, as the 150 is clear backed and the sump is behind it, which also shines through and gives the "Tang Heaven" a good dose of plant spectrum lighting, and also helps the Diatoms grow on that side of the display. I test monthly now that is is mature, but do check salinity daily. I rely on my urchins as monitors, well am learning to. I need to set up a controlled tank and actually learn what they do and when, that would be pretty interesting.

As for the the Solidifying, I have had smaller amounts of surface sand actually turn into perfectly smooth rocks, I will find one and snap a photo. Its very weird, and I am wondering about actually doing a tank just to try to solidify it with chemicals....Maybe invent a new form of DIY LIVE ROCK designed to feed Diatoms?

I have seen the Freshwater petstore silica sand, the 2mm (roughly) coarse sand do some nice damage, but it was to an AXALOTOL...he ate it and died, so I would definitely avoid that with your fish as well, at least ones that eat off the sand. Also, I have noticed that those red Spaghetti Worms LOVE it. I have one every square centimeter at least. The new tank hides the sand from the front, but if I can find pics of my Girlfriends old tank, with a completely different kind of silicate sand, I will post them as well...mght take a year or 12, I have so many pics of fish and progress I cant even remember half of them.

Thinking out side the box is often a byproduct of thinking within the wallet! haha. I was a dog groomer in a place with no show dogs, so I wasn't raking in the Fragging dough like I am now. I have since retired from grooming and my aquariums now pays all my bills.
 
Infact, This is what I am doing to my next tank.
Add the dry rock and silica sand, mix in the saltwater,
then use a Hydroponic 400w metal halide bulb that fits in my fixture, I will do this 16hrs for 3 weeks until I Cannot see a single grain of sand or rock or even glass.
In the meantime I will be marine acclimating about 10 mollies.
When the 3 Weeks is up, They will go in the tank.
No light for 3 days, then I had the Clean Up Crew. 10 turbos, 10 hermits, 5 giant nassarius, 10 regular ones, and one mini starfish who will multiply forever.
The same day I will turn on the Actinic lights only for 8hrs a day until the tank is as clean as they will get it.
Now I will scrub the glass only, and siphon what I can while doing so, thus the first water change will begin.
After the water change, I will set the Actinics to run for 2 weeks like GARF does. This will make the coraline from my seed rock spread everywhere...BUT THE SAND!!! I have not had a single grain of purple sand with silica.
After the 2 weeks, The lights go to the Normal Reef Schedule I will decide is appropriate.

(not in detail of what I choose as a setup, but will be exactly what I do as far as water, sand, rock, and lighting)
 
ROBERT, here is the only solidified silica sand rock I have, it is after 1 full year of reefing.
 

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I know for a fact every rubble (I have no rubble) that is in my system, this was formed near a current that was 3200gph. MY calcium levels are often on the higher side, and with aragonite would have probably made the whole bed solid...Which may be why people dose CA more than me. I have a rock full of scallops and a ton of corals, and they dont suck that much out of the water it seems.
 
It was crazy when I noticed it forming, the sand blasting around it made it have cool layers that normally take years to form, it was interesting as much as the corals were, just not colorful or needy haha...rocks...
 
AND I DO NOT CONDONE CIGARETTES, they are just the one thing I know everyone is familiar with since poverty levels have made people forget what a dollar bill looks like
 
Just moved the whole system to a new house :D. It looks horrid right now, I split it all off into different tanks w/ no order and all the sand is in one tank...I'm basically bringing it all back to temp and designing the new setup.

I would say that the first month, maybe 2, are terrifyingly diatomaceous. The glass gets insane, what starts as a fine powder can turn into a brown/orange skin. Wait til the bloom, add some mollies. U can plant a cleanup crew as well...once through the algae cycle, the sand looks great.

I like aragonite, its just hard to locate anywhere but the lfs. It also will add biodiversity, and would benefit more I imagine if you mix them
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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  • Not yet, but I have one that I want to buy in mind!

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  • No.

    Votes: 26 37.1%
  • Other (please explain).

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