Another shamefully panicky question. - The Planted Tank Forum
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post #1 of 6 (permalink) Old 12-04-2011, 08:08 AM Thread Starter
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Another shamefully panicky question.

Every day I wake up to a pile of floating leaves. It is extremely depressing. I need help, or consoling, or both. My once balanced tank has become a little biological battleground puttering along in a 55g tank.

Aside from the staghorn blooms and lovely undulating meadows of green fuzz algae, the plants themselves have developed issues. There's a whole new raft of l. repens leaves floating at the top daily. These all are coming from the bottom of the stem, rotting from the stem outwards. thank god it's just the repens and not something else, but never have I had this many issues at once. I'm waiting on a pressurized system to come via parcel post, but it's been about a week and the thing is apparently still en route to the sorting facility.

If there's one thing I've learned here from the arguments on tpt, it's that someone will always be able to grow plants without co2, fancy substrates, or crazy lights. so, someone advise me, please. Is it just the lack of c02, or a bigger issue?

x2 diyco2
300gph total in filtration
5ml npk + 3ml csm+b via pmdd+p daily (, I use his method)
130w 10000K +130w actinic (it's not my elec bill so... why not) via pc, 8hr daily
tons of stems, a few anonymous crypts and a baseball sized hunk of moss.
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post #2 of 6 (permalink) Old 12-04-2011, 08:15 AM
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Ask the seller from which you bought the plants if they were grown emersed. If so, dropping leaves is normal. In few weeks you should see new growth. That would also explain the algae problems; the plants aren't able to use the ferts you're adding while the combined effect of rotting leaves and low CO2 gives the algae a perfect opportunity to take hold.

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post #3 of 6 (permalink) Old 12-04-2011, 08:40 AM
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Originally Posted by aweeby View Post
130w 10000K +130w actinic (it's not my elec bill so... why not) via pc, 8hr daily
"Why not" you ask?

One might say that not wanting to make "a battleground in a 55G tank" is a reason why not. Get all those actinics off of there and maybe even take off some of the 130W 10Ks.


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post #4 of 6 (permalink) Old 12-04-2011, 05:54 PM Thread Starter
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this tank has been up and running for months in this same way, and had been doing great. All the plants had safely made the transition a long time ago. Only thing that's recently changed is the co2 (4diy co2- to 2) and the hours of light it gets (8 instead of 12). There were 5 days without dosing, but that can't be it, right? Taking out the actinics sounds logical though.
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post #5 of 6 (permalink) Old 12-04-2011, 06:45 PM
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It sounds like your plants are adjusting to their new growing conditions, i.e., less CO2, shorter lighting period, and less fertilizing. I think once you get things stabilized and can keep things consistent, things will improve.
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post #6 of 6 (permalink) Old 12-04-2011, 09:00 PM
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Since the tank was doing well before, it very likely increased in plant mass considerably during that period. That means it required a lot more nutrients to maintain the same growth rate. It also means the water circulation in the tank was greatly reduced due to the plant mass blocking the flow. Then, you reduced the amount of CO2 the plants got by half. All of this with what could be, but isn't necessarily high light. It is definitely medium or higher light. With that much light you have to meet the plants requirements for all nutrients, so they can grow as fast as the amount of light is pushing them to. Otherwise some plants will hog the nutrients, some plants will adjust by shedding lower leaves to get more nutrients. And, algae will see an open door to starting vast colonies.

What specific lights, made by whom, do you have?

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