can adding gravel and live plants cause "mini cycle"? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 02-04-2012, 02:08 PM Thread Starter
can adding gravel and live plants cause "mini cycle"?

added 35lbs of gravel to my 55 gallon yesterday,(didn't remove any) and added 5 stems of italian val,water sprite and an ancharis. I had to remove 4 plastic plants but kept the others in there. Today was water day change and tested water before changing and had .25 amm and .25 nitirite,hadn't had readings on those since the tank was finally cycled 5 months ago. So I did a 50% WC instead of my normal 25% and it took care of the readings. What could have caused this ? I feed once a day. Stock is 3 platies,6 cherry barbs and 5 zebra danios.
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post #2 of 3 Old 02-04-2012, 02:18 PM
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Not certain what would have caused the change. Adding live plants should help the issue, not casue a mini cycle!
Now, if you buried your already "active" gravel with a thick layer of new gravel, that could be the problem. A layer of new gravel may have caused an anaerobic condition or limited water flow to the established bacterially seeded gravel layer, cutting down the tank's ability to process waste.

18 species/varieties of fish, 15 species/varieties of plants - The fish are finally ahead of the plants!
*560 gallons (2120 liters) in 5 tanks -> you do the math.
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post #3 of 3 Old 02-04-2012, 02:37 PM Thread Starter
yeah,pretty much buried the gravel...

is this an huge issue? i had too much color gravel and added more black,only stirred up very slightly. If this messed up the cycle how long does it take to get back to normal..Thanks
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