New saltwater tank seeking advice

haven283

AC Members
Nov 20, 2008
27
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Canada - SW Ontario
I posted this in the "introduce yourself" thread as well:


I just started a new aquarium.. I bought a used 40-ish gallon saltwater tank, which I presently have cycling.


It has been almost a week now (day 6) and just today I noticed some tiny shrimp-like guys scuttling around my big hunk of live rock.. I might have seen about 30 or more. this seems to be happening in the dark, or at night but not so much when the lights are on, so to speak. Moreover, I have small white bits of thick cobweb-like growth happening in a few tiny isolated pockets in the big rock.

Now, in my haste I set up the tank with some of the live rock and aragonite substrate, mechanical filter and heater and light on a timer (about 15 hrs on with a setting to turn off overnight). I did not condition this water at first, I was not instructed to do so. The next day I bought myelf conditioner and added it to the tank (measured according to bottle instructions)
A couple days later I got more live rock (Totaka and Fiji) and the fish (a black damsel with yellow fin-tips). All were added directly to the tank.

I did not preclean any of the rocks. . I only learned of this technique after reading up some, following having started the cycle. I also haven't done any water changes, although just today I added more salt and water, at the suggestion of one storeowner (tank wasn't full to the top apparently)

Should I be worried about the tiny critters and white stuff?

I still have to get a test kit for the ammonia and nitrate and nitrite levels. I was told not to worry about that stuff for a couple weeks and I am not planning to do any additions to the tank, for a few more weeks from today. Still, after doing some reading I can't help but think I might have erred somewhere.

Any thoughts? would be appreciated!
 
You're doing fine.

The little "scuttlers" sound like copepods, tiny crustaceans. A good thing :)
The cobweb like stuff could be a sponge but a photo would help I.D it accurately;)

A lot of us don't agree with use fish to cycle a tank (as much as we all hate damsels;)) especially if you don't want to keep them later. Damsels can be very aggressive and can cause problems with any future additions.

I've never pre-cleaned my rock, IMO it aids the cycle. I've also never used water conditioners so I can't comment on them, but I do recommend RO (Reverse Osmosis) water. Units can be bought quite cheaply second hand or most LFS sell it.

I'd also get your test kits sooner, rather than later. That way you can keep an eye on how your levels are doing during the cycle. If you don't test frequently, you may miss that all important peak;)

HTH
 
Enjoy this phase - the building is the funnest IMO!! I wish I would have kept fish out longer to enjoy the nighttime creatures! They tend to disappear and hide when predators are added.
 
I took pictures!

here are a couple shots of that suspicious cobweb stuff. i am also noticing some white snowy stuff accumulating on top of the big rock that seems to be increasing all over. . but the cobwebs haven't changed much in the past two days. :)

cobweb1.jpg


suspicious1.jpg


cobweb2.jpg


suspicious2.jpg
 
critters are good :-)
sounds like you have amphipods they scurry funny.
I had the same cob web like stuff , i was thinking its some kind of den for eggs worms or something during the cycling process because i have never seen it since and the tank is 1year now .
 
Hello everyone I am in the process of turning my 20 gallon tall tank into a sw tank... I am wondering is there a general rule as to how many pounds of live rock per gallon I should use?
 
Out of any and all curiousity...
1. Are you checking your salinity yet? You just can't add salt and water and expect for it to properly mix by itself.
2. Are you just dropping salt into the water without mixing it first? That white stuff on the rock looks to be salt that has not dissolved.
3. Impossible to think that your tank has even had a chance to cycle properly. Do not add anything else into the tank except for LR for the next few weeks.

I don't know what type of pet store you are going to, but I have a feeling that they are not giving you proper advice or really shall I say a proper way to go about things.

Keep in mind that a SW tank can be very unforgiving as opposed to a FW tank if it crashes from a huge spike.

For Live Rock you should really have at least 1.5-2lbs per gallon.
 
what you say makes sense, skene


now, I know if I keep adding live rock I'll be displacing water. How do I make the necessary conversion/displacement calculation? that shouldn't be too easy but at the same time it has been running through my mind.

I presently have 12 lbs of LR in a 35 gallon tank. I know I need more but not exactly how much, w/o compromising space..

I'll post a new thread about this question after I look around to see if anyone else has asked the same question(s). .

. . and I'll keep stirring the water, try and see if that white stuff is indeed salt deposit.
 
once again... Live Rock 1.5-2lbs per gallon of water.
So let's say you have a 10 gallon tank. If you have 20lbs of live rock that would equate to 2 lbs per gallon. Do not factor in the real amount of current amounts of X gallons of water in the tank.
You can never have enough live rock. I have a 6 gallon nano with 20lbs of rock. Water currently is approx 4 gallons after live sand and rock.
Keep in mind that the more beneficial nitrate consuming bacteria you have the better.
Consider it over filtration. This allows the system to be more forgiving.

As for mixing up your water, you should be doing this in a separate source. Such as a bucket. Hand stir the water and salt until the majority of the salt has dissolved. Keep in mind that the approx temp for the mixture and ability to dissolve the salt should be above 78* F. After you have made your mixture, you should keep the water consistantly mixing with the use of a powerhead. This will help oxygenate the water before adding into the tank.
 
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