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Old 05-02-2007, 01:02 PM   #11
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I use GAC but the synthetics mentioned are better but IMO you have to really really figure your bioload out when figuring out how long to use them. I got some chemi pure the other day and it had on the label " never have to do PWC`s again". Even though they might polish the water and keep it clean it has no value in adding trace elements. IMO I`ll stick with my weekly PWC`s and occasional GAC.
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Old 05-06-2007, 01:06 AM   #12
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I'm trying to decide what to do about sand in the tank. I found a fine white sand at the LFS that i was thinking about using. Is there any kind of sand i could buy that wouldn't be good or limit what i can put in my tank? How deep of a sand bed would i need. some people seem to put in a fairly deep bed and some people go shallow. whats the advantages and disadvantages of going with a deeper or shallower sand bed?

also what size heaters would you suggest for my 90 gallon tank? Thinking about getting two. any suggested brands?
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Old 05-06-2007, 10:19 AM   #13
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A deeper sand bed is better in every tank as far as I know. It works like liverock in the sense that bacteria grows in it which helps with the nitrification process. A finer sandbed is needed for many bottom dwelling fish like sharks, stingrays, and it is better for sand sifting gobies so that they don't get scratched by the substrate which makes them more susceptible to infections.

As far as the heater goes, you should be able to find a single heater that will work with your tank. The problem with having two heaters is that it is difficult to keep a stable temperature when two heaters are working independently on the same body of water. Using a heater with a powerhead near it will help circulate and regulate the temperature better than two heaters. For what one to use, check the packaging, it will say what size they are good up to. For example, this description shows what size heater you need for a 90 gallon tank - http://www.drsfostersmith.com/Produc...&N=2004+113767
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Old 05-06-2007, 12:15 PM   #14
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Welcome to AquriumAdivce.com!!!
All great advice given so far.
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Is there any kind of sand i could buy that wouldn't be good or limit what i can put in my tank?
Make sure it is not a silicate based sand. Should be aragonite. YOu can actually find it for a lot cheaper at home improvement stores (sold for sand boxes). Just make sure it is the right kind. Buying from the LFS may be safer. Don't waste your money on the "live sand" sold in a bag. Get dry sand and ask the LFS for a couple of cups of LS from an established tank to seed your sand bed.
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How deep of a sand bed would i need. some people seem to put in a fairly deep bed and some people go shallow. whats the advantages and disadvantages of going with a deeper or shallower sand bed?
2-3 inches is fine. There is a filtration method that uses a "deep sand bed". This is a sand bed of 6-8 inches with little sifting. The idea is to provide an anaerobic environment for the benefical bacteria to grown. It can also trap pockets of toxic gas that, when released, will foul your tank. 2-3 inches is much better, IMHO.
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also what size heaters would you suggest for my 90 gallon tank?
I suggest going with two heaters, instead of one. This way, if one fails, you will still have another one to keep temp fairly stable until you correct the other one. I like Visa-term heaters.
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Old 05-06-2007, 12:19 PM   #15
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I use the finnex titanium digital heaters. I just had a lot of water drain from my tank, exposing them to the air. They made it through and are still working.
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Old 05-07-2007, 01:57 PM   #16
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I went to the LFS to see what kind of live rock they had and thier rock was all brown and ugly looking. the guy at the store said that most rock comes that way and that if you keep the calcium and alk levels high it will grow that nice looking purple color in 6-8 weeks. Does all live rock come that way? Do you have to have a small peice of purple rock to start the purple growing on your other rocks or will it naturally grow no matter what?
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Old 05-07-2007, 02:07 PM   #17
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Does all live rock come that way?
Depending on where you get it, it can look a lot nicer. I use Base Rock to save on the cost of LR, mixed with some cured LR.
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Do you have to have a small peice of purple rock to start the purple growing on your other rocks or will it naturally grow no matter what?
You will need an initial source, and it will spread.
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Old 05-07-2007, 02:10 PM   #18
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Most rock ordered online and shipped overnight have lots of color and "life" to it IME. Typically you won't pay anymore then what the lfs has either. The advantages to buying from the lfs is the rock will already be curred but IME it's not as high in quality as what most online vendors offer.

Having said that if you live near a lot of lfs that sell lr I'd check locally first because you might get lucky and save the shipping cost. I had a new lfs open a couple of months ago that stocked very nice looking rock for around $6 a lbs.
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Old 05-11-2007, 01:05 AM   #19
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I use this one:
http://cgi.ebay.com/New-6-stage-100-...QQcmdZViewItem
It is generally attached to your fawcet and filters the water at the tap, some folks use it near their washer output or under their tanks for the FW top off system.
we ended up getting this RO/DI unit you suggested for lack of another good source of water. We set it up so that it hooks up to a focet or hose. Do you just turn on the water full blast and let it regulate the pressure its self? Can you put to much pressure on it with just the house water pressure?
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Old 05-11-2007, 10:44 AM   #20
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I'm on well water, so I don't have a lot of pressure. You should have an outlet for the RO (the smaller one) and I have full RO/DI through my main (this is not the best set up, but that's all I could manage). You can go full blast, unless your pressure is super strong, you should be good. I imagine there is some sort of regulation or range for water pressure, so you should still be good.
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