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Old 20-06-2006, 04:55 AM posted to rec.aquaria.freshwater.plants,rec.aquaria.freshwater.misc
Ki-L
 
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Default Black Brush and green algae problems - wire algae

*Note: There are two "Koi-Lo's" on the pond and aquaria groups.

"Jolly Fisherman" wrote in message
...
On Fri, 16 Jun 2006 21:08:06 -0500, Ki-L 1[email protected]1. wrote:

snip
but all the new plants either failed or are failing despite the Seachem
additives (micro-nutrients, Excel, iron etc) and extra light fixtures on
the
tanks.


Perhaps its too much light?


I can't possibly see how four 40w fluorescence can be too much light over a
standard 55g tank. The old faithfuls improved with more light and
nutrients.

snip

Well there is no way I can physically handle more vacuuming and partial
water changes.


I'm not suggesting that.

I've improved the lighting and all the supplements plus
bought the plecos and otos. I feel there isn't anything more I can do at
this time.


It still seems the plants aren't getting exactly what they need-
missing nutrients (despite best efforts), too much light, etc. Are
the plants showing particular deficiencies or calcification?


No calcification but the swords show signs of potassium deficiency. I add
extra potassium but it doesn't help, so something else must be missing. The
sags rotted away at their bases and the bases weren't covered in gravel.
The water wisteria, ludwigia, rotalia, and gygrophlia got paler and paler
until they all but faded away in the 55s. Meanwhile sharing the same two
55s these are thriving; American vals, anubias, a few crypts, elodia,
hornwart is making a comeback after a major dieoff last winter. The giant
hairgrass is all but gone in one 55 and just hanging on in the other.
They're partly covered in an ugly black algae.

I'm not 100% sure Flourish is truly equivalent to CO2 fertilization.
At least I've been reading conflicting things.


It's probably not but did perk up the plants, especially those that were
doing ok to start with. Or maybe it was the micronutrients that made them
a
darker green. The frustrating thing is I ordered more of these products
but
then the effects wore off. I added extra potassium but that had no effect
either. My sags are about dead and the Amazon swords look pretty shabby.


I believe the main ingredient of Excel is Polycycloglutaracetal an
isomeric form of glutaraldehyde, a very powerful disinfectant. Seachem
claims it is less reactive and more easily utilized by plants as a
carbon source. However one wonders if it has some algaecidal
properties. It is dangerous to aquatic life if overdosed. Frankly
I'm not excited about even handling water that has been treated with
Excel.


I'm not exceeding the recommended amount. I have been having very strange
die-offs of healthy goldfish as I've mentioned here several times. I
wonder........ healthy fish one minute and hours later dead on the bottom.
:-| I never made note of how many hours after adding these supplements
they died.

The iron in flourish is bound to gluconate, a carbohydrate. Seachem
claims this is an additional carbon source. It would seem it is also
accessible to bacteria and converted to sugars & CO2.
Basically these types of nutrients are beneficial to plants, but it's
easy to miss key nutrients or for them no not be as effective or
exactly as advertised IMHO.


Maybe I'll just start to add Miracle Grow or Peter's to the tanks as I do
the fishless pond plant tanks outside. Those plants are going crazy. It's
a heck of a lot cheaper as well. :-) I got a huge 5lb container of MG
Bloom Booster with micronutroents at a close-out sale for $2.99 a few weeks
ago.

Maybe slower release substrate fertilization may be of help for
certain plants?

I just don't have the time and energy to tear these two 55s down and
re-do
them. This is the busiest time of the year here.


Take a look at:
http://www.plantguild.com/html/spot_fertilization.html
http://www.plantguild.com/html/subst...etrofiter.html


I'll definitely will check this out tonight. Thanks.

........ Then I bough
some new and different plants to experiment with for a change-of-scenery.
Shortly afterward the black sooty algae reared it's ugly head and from
there
it's history.


These were already cycled tanks (without plants). Perhaps biobugs are
out competing the plants as well.


No, I meant the 10g were cycled. After the 55s ran for a few days I added
the plants, then the fancy goldfish.

Expensive supplements, Excel, serious gravel vacuuming, water
changes and more water changes, more lighting..... Oddly the water
wisteria
is thriving in a 10g and has wasted away in the 55s. A small ASword is
doing ok in a 10g but the ones in the 55s will be gone soon I'm sure.


It might be damaged by such strong light with no real CO2.


It may be but only two 40 watt fluorescence over these 55s are pretty dim
and make diatoms grow - like the stuff in toilet tanks. :-( I have 2
compact 40s over each 10g and the some plants are doing better in them than
in the 55s.

Some that are failing are not covered in algae. Since I stopped feeding
the
plecs the algae tabs they did remove some of the wiry algae and this
evening
I noticed the plants are "cleaner" if that's the word that fits. After
all
is said and done I think I'll stick with the "tried and true" as you call
them. :-)


_how_ they are failing might give you useful information- if you still
care.


OK, they're edges have black algae that is not effected by Excel. Those
that had red tops or tips have lose their red color. Some rotted off at the
gravel line and or never rooted in at all. The swords show signs of
potassium deficiency. The sags are either rotting off at the bottom (crown)
and one is rotting away from the end of the leaves towards the center. Now,
while the above are near dead or obviously dying, the vals, crypts, anubias,
elodia, Java moss and hornwart are healthy and growing just fine. The
wisteria in the 10g with the platys is doing great. So I don't understand
what's going on here. It seems some of the plants are getting what they need
while the others are not. ?!?!?!?!!? As I said, I may experiment and add
some Miracle Grow to the 55s and see what happens. I don't believe it's
toxic to fish in small amounts. I often find fry in the plant prop' outdoor
tanks. Any suggestions are welcome.......
--
KL....
Aquariums since 1952.
My Pond & Aquarium Pages:
http://tinyurl.com/9do58
*Note: There are two "Koi-Lo's" on the pond and aquaria groups.
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