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Home      Reply		Viewed: 241 -- Replies: 14
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Posted	OPINIONS REQUIRED
20-04-2007 17:20 by Ste	Hi Guys! i have read on a few websites that low levels of ammonia in water less than ph7.0 is harmless to fish . What do the experts think?
20-04-2007 17:32 by PaddyD	Basically ammonia is found in 2 forms - Highly Toxic ammonia and non-toxic ammonium The aquarium test kit will read both as ammonia. In a lower ph - 7 and below, the ratio of the two types is such that it is mostly non toxic ammonium in the water. and much less toxic ammonia. So yes it is much less dangerous to fish. BUT - it indicates there is a problem as ammonia should not be present
20-04-2007 17:42 by Ste	So could that be the signs of an uncycled tank?
20-04-2007 17:44 by Ste	Would you consider Ammonia 0.50mg nitrite 0.0 nitrate 0.0 to be signs of new tank syndrome
20-04-2007 17:47 by Ste	to be causes of , sorry
20-04-2007 18:09 by keith t	It looks like your tank is not cycled being the end product nitrate is showing a 0 reading yet you have ammonia. Obviously you know the nitrogen cycle and it may be the case of the extra fish being added that has bought on a mini cycle where the filter will have to grow more bacteria to cope with the sudden increase in ammonia from fish. I would suggest a 25% water change and then test tommorow
20-04-2007 18:13 by Ste	its not my tank its the whole system that has been running since january , it gets a 30-40% water change every week with pure RO and a little tap
20-04-2007 18:16 by Ste	I used al the media from my old systems to seed the filter
20-04-2007 18:25 by Ste	Sorry 650gallon system with a 75 gallon central filter.
20-04-2007 19:41 by Ste	I thinking the same way as you keith, But the question is why has it gone back to Square one , each tank has a huey hung sponge filter in it that has been there since i started the new filter and all the media is from my previous sumps .. Im confused.
20-04-2007 19:55 by wayne	could be a problem with all those discus you put in thier just showing now .30-40% is a lot of water change id do the every 2 weeks or 20% weekly and cut down the feeding for now
20-04-2007 20:03 by Ste	I have reduced my stock now and have got rid of my big oscars . But i dont suppose the filter is getting chance to cycle when im changing a couple of hundred gallons every week , Cheers Wayne, keith and paddy
23-04-2007 09:23 by Alan	If you are having problems with ammonia or ammonium ammo lock 2 is very useful becuase it will prevent ammonium becoming harmfal ammonia and will convert ammonia to ammonium. Its useful stuff to have around it sounds like something has wiped out your filters do you dechlorinate the tap water yolu mix with the RO water if not this is your cause. As there are virtually no organics in the RO water any chlorine mixed with it will not be neutralised by the organics in addition I expect your new tank is spotlessly clean and the water is equally spotlessly clean giving rise to a very low organic load which will also increase the impact of adsding chlorianted water to the tank. In addition how was the media stored whilst being transfered over has it been exposed to any low nutrient periods in effect starving the bacteria or has it been exposed to low oxygen. You are suffering new tank syndrome in my opinion I would get the largest bottle of cycle or stress zyme I could find and put the lot in to speed up recolonization of the filters.
24-04-2007 20:12 by Ste	Hi alan , i done the change over within a couple of days so only half my media was left to die , i used the original water, and mechanical filtration from the previous sumps , also my tap water is the waste water from the RO unit , which should be chlroine free as it has passed through the first filter on the RO unit, i have put 2 big bottles of stress zyme into the filter over the last two weeks but the readings remain the same
24-04-2007 20:14 by Ste	Ps I have also moved 9 big oscars out of the system , and reduced feeding to once a day or so.

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