Tropical Fish Keeping - Aquarium fish care and resources

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-   -   Finally have fish, now some questions. (

tommyc 10-16-2007 03:17 PM

Finally have fish, now some questions.
After waiting for what seemed like an eternity, I finally have some fish in my tank. So far I have 5 Red Wag platys and 3 Golden Mickey Mouse platys.
I also have two Java ferns attached to some driftwood and four anubias planted in the fluorite substrate.

The fish have been in the tank for about a week and the plants for over a month.

For that last few days, I've noticed that my ph is slowly dropping but my other water parameters seem to be holding steady (ammonia 0, nitrite 0, nitrate 10). The ph was down to 6.0 as of yesterday. My tap water has a ph of around 7.6.

Someone mentioned that I may need to add an airstone to oxygenate the bottom part of the tank since its 24" deep.


Lupin 10-16-2007 06:46 PM

You may have low hardness levels allowing tannic acids leached by your driftwoods to acidify your tank water. Platies will not appreciate that as they thrive better in hard alkaline waters. How about going for tetras or other fish originating from blackwaters instead? If not, use crushed oyster shells or corals to buffer your pH. Place a bag of them in your filtration system.

There's no need to use airstones as your tank is not that overcrowded.

tommyc 10-16-2007 08:20 PM

I'm still wondering why the ph has went from 7.4 down to 6.0 in less than a week. The driftwood has been in the tank since I first put water in it back in August. The ph has been hovering around 7.4 tp 7.6 for almost a month.

The only thing I've added recently are the fish over the last two weeks.

LeopardCent 10-17-2007 04:19 PM

Since you have just added your fish it is probably your tank adjusting to the change in the enviroment. In any case it should settle out. I have to use a pH stabilizer for the water in my tank but its because my cities water is never the same.

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