My fish keep dying

Circulita17

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Hey guys, I recently got into the saltwater world. I did a fishless cycle and when I started all parameters were 0, at the end of the cycle they were 0 except nitrates were 40. So I performed a 30 percent water change and it went down to around 15ish. I was given a clown fish which I acclimated but died within four hours after introducing to the tank. So I decided to try with other fish. I bought two mollies, which I acclimated them for about 6 hours. One died about two hours after adding it to the tank and the other one is dying at the moment. I acclimate them using the drip method until parameters are the same as the tank, I make sure the temp is the same as well. I hope someone can help me. Can it be something in the water column? Can the gravel or live rock that a bought be leaching something ? I don't know what else to do. Any help would be gladly appreciated. Thank you guys
 
You're going to be asked quite a few questions.
How long ago did you cycle?
What are the perameters currently?
Temperature?
Salinity?
What are you doing to facilitate gas exchange?
Do you feel stray voltage at all/ can you test for it?
Are the fish showing any signs of distress? Rapid gill movements, gasping at the surface, laying on the substrate, do they have the characteristic spots of velvet or ich, swimming into areas of high flow?
Anything and everything you can possibly detail about the situation can gave crucial information.
 
I would not use the failed Molly saltwater acclimation as an indicator of an issue. The first clown, perhaps, but even then it sounds like you didn't QT it so it may have nothing to do with your tank.
 
The mollies, sure.
 
I don't think mollies taking months to convert to saltwater is known convention. More like hours or days, I think.
 
I don't think mollies taking months to convert to saltwater is known convention. More like hours or days, I think.
I've never done it personally, so I definitely defer to you on the convention. The information I had was from an article on converting freshwater/brackish guppies and mollies, but I'm not by my computer where I saved it at the moment. :3
 
I only know (think I know?) because I researched it a couple months ago when I was setting up a frag tank.
 
Welcome, I'm sorry you are having bad experiences right out of the gate. The people here should be able to help you out.

Going back to the basics, I think Hugh Mann is hitting some pretty important points.

Those are some rapid mortality rates and I suspect an important pramater may have been missed.

If you have any questions as to how you should test any of those, ask away.
 
@Hugh Mann I dont mind answering questions as long as we can figure out what I am doing wrong or what is wrong with my aquarium. I started the cycle on September 25 and it was completely cycled by October 8, I used live rock from a LFS and live aragonite sand. I also used Bio-spira with Dr TIms ammonia. I use the API testing kit and I took pictures of the parameters until the cycle was complete. At the moment ammonia is 0, nitrite is 0, and nitrate is about 15ish. I have a digital thermometer which is reading 77. 7 and a thermometer that is reading the exact same temp. My heater is set at 78. The salinity is measured with a refractometer and I calibrate before each use, the salinity is 1.025. I have a power head but I removed it because the mollies were being blown everywhere. So I am just using a HOB fluval 70. I can see little bubbles inside the aquarium. I've always wondered if it is adequate filtration for the tank, I mean with my freshwater tank there is a lot of surface agitation and I don't see the same results in my saltwater. I've never heard of stray voltage, like check to see if there is faulty equipment? How would I check for stray voltage?? Stress yes, I noticed some stress signs from all three fishes. the clown was just swimming at the bottom breathing fast and hard, he was being pushed by the filter. Now the mollies, the one that died first was just constantly near the top breathing hard and heavy. The second one died 23 hours later and he was at the bottom and near the top breathing hard and heavy. They didn't show any signs of disease. I dont know why but I keep thinking there is something in the water column. I am running carbon at the moment just in case there is something. Thank you for helping.

@HB AL Yes I tested with a calibrated refractometer. I am using a fluval 70. Thank you for helping.

@Cell No I didn't quarantine the fish, because it was my first fish and I would have been able to dose any medication if needed. Especially since it is a FOWLR. Thank you.

@HuduVudu How can I tell if there is enough gas exchange?? I can see small bubbles. thank you

@Twoddler yes, I acclimated the mollies for 6 hours until the parameters were the same. Is that too long?? I read and watched videos, some people just throw the mollies in the tank just temp acclimate them, other acclimate them for hours, and some days. Thank you

@Alaeriel The mollies were FW. People acclimate them differently some said just throw the fish in there and some acclimated them. I chose to acclimate them over the course of a few hours. I didn't feel comfortable just tossing them in the tank. Thank you

Thank you all for helping
 
@JAC- Yes it has been really stressful. I kind of just want to toss the towel and just make it a FW, I've successfully kept FW for over 10 years. It frustrates me that I can't get this one down. I need to find out was is going on. The only parameters I can test at the moment are ammonia, nitrites, and nitrates. Should I be testing something else?? thank you
 
You can test for stray voltage with a multi-tester. But why bother? Even if there's no voltage today, that's no guarantee that there won't be tomorrow. Equipment fails and heaters are especially bad about introducing stray voltage into your tank. So just as a matter of course, I always install a ground probe, in both the display tank and my sump. It's cheap and easy insurance.

That said though, I'm still willing to bet that your problem is low oxygenation. Especially since you said that you removed the powerhead. If it's battering your fish, point it towards the glass and upwards towards the surface so that the flow is diffused.
 
I placed the blue thing in the filter so it can slow down the output since my mollies were being blown away. It is a piece of a cartridge filter, so it is safe for the tank. It is a small 10 gallon tall tank. Thank you guys for helping, I hope we can figure this out.

20201012_143552.jpg
 
Hey there!

I gave a quick read through and wanted to mention something. I've acclimated mollies fairly often to saltwater, I have found that longer isn't necesarilly better. Usually around 2 hours acclimation time has given the best results, though its pretty common for at least 5-6 out of 10 to not survive this process and die very quickly, within the first 24 hours.
Assuming you didn't use tap water from the city, that may be all it is.
Do you have live rock or just the hang on filter? May need more bio filtration, but still shouldn't kill fish that fast. I am really leaning toward the mollies just not surviving the transition.
Out of the 15 I acclimated to saltwater, 2 are alive, all the others died within the first couple days and this is tank holding tangs, and other difficult fish, which showed me that it was likely them not surviving the acclimation.
 
You said you were given the clownfish, how far did it travel and how was it shipped/transported to you? It could be that it was just too stressed from the travel if it wasn't packaged properly. Do you know where they got it from?
 

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