Some miscelaneous questions... - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 11 Old 01-08-2010, 01:38 PM Thread Starter
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Question Some miscelaneous questions...

1) is it okay to have a group of 5 platies that are all males?
2) my dwarf sunset coral platies that I bought from petsmart have beautiful blue eyes. Is this rare?
3) will platies eat newborn guppy fry? (I really hope so or else I'll be overrun!)
4) do livebearers lose interest in mating after being together (males with females) for a while? my guppies seem to be less focused on mating as of late.
5) how often should I gravel vac and change water for a 16 gallon bow (100 gph filter, kept at approx. 80 degress) with 5 platies and 5 guppies?
6) Should I keep my aquarium water salty all the time to prevent disease?

Thank you for any and all answers you can give me.
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post #2 of 11 Old 01-09-2010, 02:53 PM
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Quote:
Originally Posted by fulmeralex View Post
1) is it okay to have a group of 5 platies that are all males?
Should be, yes.

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2) my dwarf sunset coral platies that I bought from petsmart have beautiful blue eyes. Is this rare?
I'm not sure about this one. Someone who has kept this variety will have to weigh in.

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3) will platies eat newborn guppy fry? (I really hope so or else I'll be overrun!)
Yes, but they're not so predatory as to go out of their way to hunt and eat them. This means that they likely will help keep the population under control, but they probably won't be able to keep it from growing completely.

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4) do livebearers lose interest in mating after being together (males with females) for a while? my guppies seem to be less focused on mating as of late.
Yes. Eventually, male guppies will start spending their retirement funds on sports cars and females will start spending more and more time at the book club. In other words: I think this is probably unwarranted anthropomorphizing of your fish.

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5) how often should I gravel vac and change water for a 16 gallon bow (100 gph filter, kept at approx. 80 degress) with 5 platies and 5 guppies?
That depends on a lot of other factors (how much and often you feed them, whether or not you have live plants and how many, etc.). Ideally, you should monitor your nitrate levels to see how quickly they rise in any given amount of time and do water changes as needed to keep nitrate below 20ppm. I would think about 25% per week should be sufficient.

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6) Should I keep my aquarium water salty all the time to prevent disease?
I don't think this is necessary at all. Keep that salt (table salt will do) on hand in case of an ich outbreak, but otherwise there's no need to keep salt in your tank.

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post #3 of 11 Old 01-12-2010, 03:29 PM
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answer 1...i would say yes this will/shud keep them all placid and lower the aggression that would be there if they had to fight for female.
answer2...as i keep a few types of platy and half of them have blue eyes and the other half have plaine eyes
answer 3...my platies that were only about 1.5 inch at the time were going wild chasing my new born guppy fry but i saved them just in time so yes i would think that you shud have no problem keeping numbers down ...if you eventually want to keep some babys i would recomend a breeder net to keep new fry in
answer4 ...it may just be that the females could be rejecting him so he may be bideing his time:)
answer5... i would definatly vac once a week ....i have the same fish as you do and thats my routeen...only remove around 2-35% of water :)
answer6...i would completely stop adding salt to your water ...until its needed ...for parasites like the white spot parasite ...:):):)



hope this helps :)
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post #4 of 11 Old 01-12-2010, 04:15 PM
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I think most table salt has iodine in it. I thought iodine was bad for fish. You may want to check on this. I will too.
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post #5 of 11 Old 01-12-2010, 06:24 PM
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You can buy non-iodized table salt. According to Lupin (who does his homework on this kind of thing) the iodine concentration in iodized table salt is not enough to harm your fish, so you don't need to worry about that.

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post #6 of 11 Old 01-13-2010, 12:27 AM
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OK good to know. So, no need to worry about iodine anymore.
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post #7 of 11 Old 01-13-2010, 02:29 AM
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Iodine is a non-issue. I've used iodized table salt with no issues. There are just many idiots who parrot the same rubbish without researching thoroughly the abstracts where experiments and other logical explanations are given out.

It's the ferrous cyanide or yellow prussiate which should be avoided. Exposure to sunlight causes it to generate hydrogen cyanide, a dangerous substance. It's not a problem in dimly litted tanks although it's more prudent to avoid it anyway.

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post #8 of 11 Old 01-17-2010, 02:06 PM Thread Starter
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Thank you for all your help. One thing that I noticed before I did a very large water change today was that my fish kept flashing (itching) on the gravel. I had salt in the water to prevent ich. However, the fish continue to flash occasionally. If they don't have ich and the water is clean and the fish are eating, WHY ARE THEY STILL ITCHING???
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post #9 of 11 Old 01-18-2010, 01:16 AM
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They could still have ich, you may not be able to see it. I do not think that salt alone is enough to cure it 100% of the time, or it may take longer if it does. There may be some time when it may or may not cure it.
Did you raise your temp?
Did you use another form of treatment?
They could be flashing for some other reason too.
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post #10 of 11 Old 01-20-2010, 02:57 AM
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Alex, are they scratching the same body area? Could be flukes too. Do you have praziquantel access?

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