ggNoRe's 20G Long - The Planted Tank Forum
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post #1 of 4 (permalink) Old 06-27-2019, 12:07 AM Thread Starter
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ggNoRe's 20G Long

Hello All,

Long time aquarium hobbyist here but first go at a planted tank. Had a basic 20G long tank that had been in my son's room for past 7 years with just basic gravel, plastic ornaments, and fish that I decided to turn into a planted tank.

So I am pretty embarrassed to say I made a noob mistake by taking out all the water and using a new filter that I started a new cycle. Which lead to several dead fish. I have been trying desperately to get things back in order ever since.

Right now Ammonia is 0, Nitrite tested 0 two days ago but is testing 1PPM now 🤷‍♂️, and Nitrates 0. One thing I am unsure about and would love advice is my PH from the tap is 7.9 but the water tests at 8.2. Is this something I should worry about? I purchased PH down but have not used it as most advice I've read is it's best to leave it alone. That being said some fish I would like to add have been said to prefer PH at 7-7.5.

Thanks all for your time and help. 😊
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post #2 of 4 (permalink) Old 06-27-2019, 03:34 PM
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So your water straight out of the tap likely has CO2 dissolved in it. As the water sits around in your tank that CO2 out-gasses or is used up by plants. This causes your ph to rise to its "true" level. It is very normal.

You can reduce ph naturally by adding wood (I see you have one big piece in there, is it new or old?) and also by adding botanicals such as catappa leaves. There are a whole list of botanicals you can add but that one is pretty popular and easy to get online. They do have to be replaced every week or so but its a natural way to lower ph and much easier on the fish.

This all assumes the rocks you are using are aquarium safe. I figured you bought them from a fish store?
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post #3 of 4 (permalink) Old 06-28-2019, 04:51 AM Thread Starter
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Thanks for the input. I got them from Petco but they were in the reptile section and not intended for aquarium use. Do you think I should mess with it or 8.2 is ok?
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post #4 of 4 (permalink) Old 07-05-2019, 03:56 AM Thread Starter
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Took out the Sandy plant and cleaned the tank. Saw a vid saying they are not meant to be fully submersed. Went from 16 guppies down to only one in the past couple weeks. Have no idea why they all died. Ammonia 0 Nitrite 0 Nitrate 0-3. Cherry shrimp and Panda mollies doing fine. Also, Anubias Petite White seems to be dying. Tried to attack pic but says exceeds quota. 😑
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