Cycle new tank

Briguy350

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I just set up my 75 with about 75lbs of BRS dry rock I acid washed and dry sand I rinsed with r/o. I have a 20l sump underneath with skimmer. How do I start my cycle? I've never used dry rock and dry sand before. I don't want to seed out of my current 36 because I've had aptasia outbreaks and hitchhiker crabs I don't want in the new tank. Does a tank cycle the same with the dry rock and sand since there is little die off? Does it take longer/faster to cycle? What should I do?
 
Also don't run your skimmer til after cycle it will slow your cycle to a crawl, sorry can't edit posts


I need gills @_@
 
Hello and welcome to r2r

To start your cycle there are a couple of choices that you could do, you can use a piece of live rock either getting a good piece from the lfs or if you know anybody that has a mature tank that is running that its pest free you could see about getting a piece from them. Another option is using a bacterial additive like dr tims or I believe that microblift, think that is the name at work right now so off the top of my head, has one that I believe works well. There will be no die off due to the fact that you are using dried rock and sand. The cycle does tend to take longer going this way instead of using live rock or sand, but it does tend to eliminate pests since the only things that will be in your system are what you place into it.

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Dried rock contains dead bacteria which makes ammonia. You don't need to buy more rock


I need gills @_@
 
Also don't run your skimmer til after cycle it will slow your cycle to a crawl, sorry can't edit posts


I need gills @_@

I actually disagree with this I ran my skimmer during my cycle starting with everything dried and was cycled in less than two months. Also know of others on here who also have ran their skimmers while cycling with no problem. However while going though your cycle I would not run the lights, not needed for the cycle and can promote algae growth.

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You prob never saw any levels of nitrite or nitrates because they were being skimmed out beforehand. Running the skimmer prob just made cycle unnoticeable.


I need gills @_@
 
i havent been running my skimmer yet because i just didnt think there was a need to since theres nothing in there. bacteria, fish anything. but i probably will fire it up in a week or so. i was just curious about the dry rock and sand ive never used before but after swaps and getting stuff from local stores or people i just dont trust anybodies tanks. not that mine are perfect im just aiming for it!
 
Please read article link i posted wait til you have 0 nitrites to run skimmer


I need gills @_@
 
You prob never saw any levels of nitrite or nitrates because they were being skimmed out beforehand. Running the skimmer prob just made cycle unnoticeable.


I need gills @_@

Actually I saw ammonia nitrites and nitrates through my cycle, tested everyday. As expected I first saw an ammonia spike which went down followed by a nitrite spike. During this time was also getting readings of nitrates.

As for the op's question since he is using dried rock that has been acid washed from my understanding there should be no organics on the rock. Which means that a source of ammonia needs to be introduced for the nitrifying bacteria to be introduced and established into his system.

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Acid washing just kills everything it still needs curing same as dried rock which means ammonia spike.


I need gills @_@
 
I started my tank with dry rock from BRS. I did not run my lights until my cycle was done. I did run my skimmer through the entire cycle. My cycle took right at 8 weeks. I pulled tone of crap out with my skimmer during this time. It made my yellow water crystal clear.

Some people throw a shrimp in or even cycle with a fish. I haven't done either of these. I just let what happens happen. I also didn't do any water changes. At 8 weeks I threw in two black clowns. One week later I threw two percs in.
 
I used a combination of BRS pukani dry and marco. There was enoough dead organic matter in the dry rock to start the cycle after about 2 weeks - time for the material to rehydrate and decompose. I used MB7 to kick start the bacteria. After about 3 weeks ammonia dropped to zero with the natural spike in nitrites, followed by nitrates. I held off on WC and skimming until nitrites dropped to zero. Water was fairly yellow after but the skimmer cleared it up over about a week, don't forget the daily cleanings and skim wet for quicker removal. After the base cycle was complete I started dosing in ammonia daily, std grocery story variety, until I hit a level that gave measureable ammonia the day after a spike. Went through another mini cycle over about a week then I was sure there was sufficient bacteria to support life safely. I've never seen a spike or mini cycle since then. Of course additions have been slow like 1 fish every 1-1.5 months, the QT time. If you don't see an ammonia rise in a couple of weeks you may ned to add some organic material to decompose or just start spiking in some ammonia to start the bacterial bloom your developing during the cycle. BTW the nitrate cnversion will take about 3-6 months to really kick in so be patient and careful on keeping up with normal water changes, 10% qweekly if you can, for the good of your fish. I like clean water and air to live in and demand the same for my aquarium inhabitents. Good luck and be patient.
 
I took a few small pieces of rock I had under the sand that were holding up some of my rock work and a cup of my sand and dump them in. I'm gonna take another cup or so and dump it in to try and seed it. I just don't want to stir to much up in my current tank. I could see pods running out of the rock and a few baby snails. But I'm guessing they won't survive.
 
I took a few small pieces of rock I had under the sand that were holding up some of my rock work and a cup of my sand and dump them in. I'm gonna take another cup or so and dump it in to try and seed it. I just don't want to stir to much up in my current tank. I could see pods running out of the rock and a few baby snails. But I'm guessing they won't survive.

Why? It was gonna cycle just fine


I need gills @_@
 
Because there's a lot of people telling me to seed it. Not like I hung a shrimp in there. I can still see a punch of pods running around the rocks and the snails are alive. Whys so wrong with that?
 

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