[wxl14]

My suggestion for a 3 gallon tank is to have no fish.

[mray]

I would go buy some either from a vendor or some kind of supermarket. Bringing a 3 gallon tank from 40PPT to 35PPT should only require about 4-5 cups at most.

[3J3]

thanks you guys youve been very helpfull and ill go thr the super market now and buy some but will that also help me with my ammonia problem

[mray]

No, it should dilute your ammonia but it won't make it go away. Something is dying in your tank causing your ammonia spike.

[KathyC]

Is there any living coral or fish left in this tank? (Though I can't imagine that there would be with a sg of 1.040)
If not, I'd suggest you drain ALL of the water and replace it with new premade water and then allow the tank to cycle completely before adding any living creature (fish or coral).
It would also be best if you did more reading about how to maintain a SW tank. You definitely need to find a source of RO water to use for topping off evaporated water, you can't use the premade water for that.
You also should not use chemicals in your tank. The mistake you made there was using a product that detoxifies ammonia and not understanding that the product itself would skew the results of an ammonia test.

What lighting do you have for this tank?
Do you have a skimmer or filter of any sort?
What are you measuring the sg with?

[mray]

I think 40PPT is only 1.031 although that is still extremely high it's not as bad as 1.040.

[3J3]

you are mistaken me for a newbie this is just my first nano as you all know the smaller the tank the less time it takes for these things to reach critical levels i just wanted to see if someone knew of a way to speed up the prosess for me and i have the light that comes with the tank a 9w 50/50 cf no skimmer (cant find one small enough) just a filter that came with it and im useing a hydrometer bought at petco

[KathyC]

You need to go find the type of ammonia kit that uses the tablet form (I believe there are 2 tablets necessary for each test) of reagent to test in a tank after you use an ammonia detoxifying product.
Your current ammonia test kit is inappropriate for use after using the product that you did.

[KathyC]

And sorry..I read your SG incorrectly as I was obviously reading to fast..I believe the rest if the advice I posted was correct

[CAPTAIN STABBIN]

Ive been running a 3gal for the last six month. I followed the advice of most reefer's and had no fish and did not add anything until all parameters were maintained for at least two months after cycle. I would remove all inhabitants (fish and inverts if you have em) restart the whole set up. Check all rocks and under them to see what could be is causing the spike. These small systems are unforgiving and changes take place very fast. You also may want to start using chemipure after in your filter. I have upgraded to a larger clear filter with cheato,live rock,sand and lighting for it (looks just like a sub mini tank!).