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ok, after reading some threads, it seems like Kim needs as much info as possible... so, bear with me:
i have a 90 gallon tank that has been up and running for years... i have replaced gravel with sand, reaquascaped mulitiple times, even bought new filters, and got rid of some old ones... not all in a week, but throughout my 2-3 years of fish keeping... more recently, i got rid of my old hybrids, and bought 17 new fish(fry 1-1.5") look at "my tank" to see the species... i have had the new fish for about 3-4 months now, possibly 5 months... i have been noticing that multiple fish seem to be "flashing" against the sand and my rocks... although i haven't seen any spots develops yet, i always thought that "flashing" against substrate and decor was ick... is there anything else it could be... i did read that they flash when you do waterchanges... but i am really paying attenttion to my parameters to see how long i can/should go before i do waterchanges... i used to do them everyweek(30-40%)... i bought a new test kit maybe a month ago, so i know that is good... my parameters all seem to be fine(here are the pics of the test results)
PH
Ammonia
Nitrite
nitrate
i think i got everything... i hope.. let me know if you need more info, but just curious if it is something i need to worry about, or if there are illnesses that are invisible... this has been going on for a few days now, and like i said i haven't done a waterchange in(this is my 2nd week) 2 weeks... could it just be that i need to do waterchanges everyweek, or what?
thanks guys.
brent
i have a 90 gallon tank that has been up and running for years... i have replaced gravel with sand, reaquascaped mulitiple times, even bought new filters, and got rid of some old ones... not all in a week, but throughout my 2-3 years of fish keeping... more recently, i got rid of my old hybrids, and bought 17 new fish(fry 1-1.5") look at "my tank" to see the species... i have had the new fish for about 3-4 months now, possibly 5 months... i have been noticing that multiple fish seem to be "flashing" against the sand and my rocks... although i haven't seen any spots develops yet, i always thought that "flashing" against substrate and decor was ick... is there anything else it could be... i did read that they flash when you do waterchanges... but i am really paying attenttion to my parameters to see how long i can/should go before i do waterchanges... i used to do them everyweek(30-40%)... i bought a new test kit maybe a month ago, so i know that is good... my parameters all seem to be fine(here are the pics of the test results)
PH

Ammonia

Nitrite

nitrate

i think i got everything... i hope.. let me know if you need more info, but just curious if it is something i need to worry about, or if there are illnesses that are invisible... this has been going on for a few days now, and like i said i haven't done a waterchange in(this is my 2nd week) 2 weeks... could it just be that i need to do waterchanges everyweek, or what?
thanks guys.
brent