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Removed Sand from Tank (1 Viewer)

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FireEater

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Took two full days, but I was able to siphon all sand from my 125g, sift it, wash it and put it back. I actually went back with not quite half of what was in there.

When I set that tank up back in 2006, I went with Southdown, anyone remember that mess? lol! Super fine sand that snows in the tank. Then I added regular Carib Sand on top of it after I removed some of it in hopes of holding it down.

Well after eight years of running, I believe the sand was loaded with phosphates and other crud. I had already removed all the sand from my Refugium last month. I posted a thread with all those pics. I didn't take any pics this time though.

After removing all the sand from the Refugium, I could tell the system was running a lot cleaner, but still something was up it seems. Some corals were just not acting right, while others were doing great. Parameters were all good, but I just didn't trust that old of a sandbed.

So I set up an Igloo on top of a TV Tray. I hooked a hose to the drain and put it in the Sump area by the Skimmer. Inside the Igloo, I folded up a towel and put it at one end against the drain. That way it would catch and filter all the crud from the sand and water.

I would start a siphon with the clear hose and suck up the sand and as it went into the Igloo, the water would filter through back into the tank. I realized this would not filter out the phosphates, but was the quickest way to go as I had a lot of sand in there. Periodically I would scoop the sand out and put it in 5g buckets.

As I said, I did half the tank one day and half the other. I would then take the sand, put it in a sifter I made with some screen and rinse it, sifting all the Southdown out. Then put it in a bucket to go back in the tank.

Of course most of my rock work collapsed, but I was able to place it directly on my bottom and piece it all together better than it was. So I replaced some rock work, put some sand back in, replaced some more rock, put some more sand in, until I had half the tank down. Then the next day I did the same thing on the other half.

Now after a few days, the tank does look cleaner and water is clearer. Tomorrow I will do a 65g water change on it. I used a turkey baster last night and blew out a lot of the rock. Tonight I will use a small power head and do it again. I also put a large sock filter over the two pipes coming from both tanks into the Sump. I kept it in place for two days and it was pretty clogged up.

I put another one in place tonight for the power head blow down.

Like I said, I just believe that after 8 years, my sand was most likely full up. Though with zero phosphates registering the day before, it might not have been leaching them out continually. Maybe periodically though?

But for now, I have fresh sand in the 29g and the 125g with the Sump sand free. It has rocks and dead coral in it holding up my Mangrove.

EDIT: I forgot, my Magnesium level was at 650ppm the day before also.
 
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Andy

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Hey FireEater,

Good to see you active again. I wonder the same thing about my sand bed long term. It's only 2 yrs old at this time but am thinking of slowly siphoning it out.

Think I got a green toadstool from you about 8 yrs ago??
 
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FireEater

FireEater

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I think it was a baby off the Tryee one. The mother colony is huge and has not produced babies in a while. But one of its babies from a few years ago is always dropping them off.
 

BigRick

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According to Dave at Urban Aquatics, for his customers he replenishes the bacteria in the water every 6 months with sand beds. He's done extensive research on it and has had great success by doing this without having to disturb the sand bed. He recommends Dr Tims Bacteria. I've been doing this for a few years and still have the same sand untouched.
 
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