Nic;1904822; said:could have been ammonia... it is more toxic @ high PH.... i understand where you are coming from but allot of people cant control there ph properly when lowering it and make it unstable and cause a swing and kill the fish as well.....
i agree with you 100%. the person in the story i mentioned before insisted his water parameters were perfect so thats what i went off of. it could of been an undetectable amount of ammonia at such a high ph which killed his ray. but anyways what me and nic are trying to say is make sure you keep your water clean and constant whether high ph or low, the ph spike will kill it or the small traces of ammonia with i high ph with high temps will kill it. goodluck to you and you've come to the right place for advice. oh ya forgot to mention i have never had any problems with any rays getting sucked by the intakes, just make sure it has a decent prefilter on it so you dont get the straight up vacuum effect, IDK but that might do some damage.
