When can u dose ferts for new tank cycling? - The Planted Tank Forum
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post #1 of 16 (permalink) Old 04-27-2013, 05:39 PM Thread Starter
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When can u dose ferts for new tank cycling?

Plants are stabilizing. I have some algae issues. Co2 is at 15ppm(cant go any higher at current bps)
Its been about 10days since tanks been running. When should i start to dose npk, micro?
My nitrate is 10 now. Ammonia from 4 to 2 now and nitrite is 1ppm.
I was thinking dose half. I have dry ferts.
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post #2 of 16 (permalink) Old 04-27-2013, 05:41 PM
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you may want to consider dealing with the algae issue first before adding more nutrients into the water column. Any details on the lighting type and photo period?

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post #3 of 16 (permalink) Old 04-27-2013, 06:28 PM Thread Starter
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4x54w t5s. But i got another 4x54w. Im thinking of running 2 more x 54w first so six total 54w t5
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post #4 of 16 (permalink) Old 04-27-2013, 06:29 PM Thread Starter
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Lights been on for 10-12 hrs. I know im gonna adjust and gona put in timer today.
Plan to run 8hrs total.
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post #5 of 16 (permalink) Old 04-27-2013, 06:44 PM
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What size is your tank? 55 gallon?
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post #6 of 16 (permalink) Old 04-27-2013, 06:50 PM
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I would dose now. Typically you start dosing as soon as you add the plants. The quicker the plants are healthy the quicker the algae abates. I've seen no evidence that the inorganic fertilizers we use contribute to algae. Ammonia on the other hand...HUGE! Healthy plants will strip ammonia quicker hence reducing the algae bloom. I would also up the CO2.
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post #7 of 16 (permalink) Old 04-27-2013, 07:08 PM Thread Starter
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265 gal
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post #8 of 16 (permalink) Old 04-27-2013, 07:09 PM Thread Starter
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My co2 is almost running at very high bps. I cant even count it. If i increase more then it would be like continuous stream. Should i still increase?
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post #9 of 16 (permalink) Old 04-27-2013, 07:11 PM
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what sort of plants are in the tank? how densely planted is the tank at this point?

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post #10 of 16 (permalink) Old 04-27-2013, 07:14 PM Thread Starter
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Lot of stem plants. Tank is fully covered
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post #11 of 16 (permalink) Old 04-27-2013, 07:15 PM
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I would dose now. I am just about done cycling my tank and have been dosing from day one. Very minimal algae issues. I also would dose the full amounts. As long as your plants are growing well they will outcompete the algae for the nutrients. Deficiency leads to algae. I would also think the co2 is gonna need increased some how though.
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post #12 of 16 (permalink) Old 04-27-2013, 07:19 PM
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Quote:
Originally Posted by dkreef View Post
My co2 is almost running at very high bps. I cant even count it. If i increase more then it would be like continuous stream. Should i still increase?
With a tank that large you won't ever be able to count it. You make very small adjustments and wait. Maybe a ladder diffuser in the sump would enable you to see the bubble rate, no idea though.
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post #13 of 16 (permalink) Old 04-27-2013, 08:35 PM Thread Starter
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Quote:
Originally Posted by Zorfox View Post
With a tank that large you won't ever be able to count it. You make very small adjustments and wait. Maybe a ladder diffuser in the sump would enable you to see the bubble rate, no idea though.
At this kinda co2 flow rate, how long can 20lb tank last?
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post #14 of 16 (permalink) Old 04-27-2013, 08:56 PM
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I have no idea. It varies a lot from what I've seen. You won't be refilling it every 2 months though. Maybe twice a year. The bottom line is the CO2 level needs to be higher. If you're using one bubble counter for that size tank it'll never be possible to count. I can't count 4 per second much less 10 lol. Basically you just make very small bumps every few days until you see problems with your fish. Then you bump it back down to where it was. No way to count bubbles unless you use other means.
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post #15 of 16 (permalink) Old 04-27-2013, 10:31 PM Thread Starter
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Well right now i have no fish. Doing fishless cycljng.
And plus i got ph controller set at 6.8
So i guess i can crank it up a whole lot more.
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