Aquatic plant, + collecting in Lake Gatun

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That view of the tank right there is as good a reason as any to get up early in the morning.
 
I may get some large containers if breeding starts in earnest, or if I get more and larger species.

I don't see why it won't work. My 240G pond is very light when empty. I can lift it up with one hand. Those types can also be stuck up into one another. Mine is potable MPDE made for drinking water storage and they make them in all sizes, much much larger. From what the retailer told me, if used outside under the sun warranty is just 10 years. If used inside, they said it can last indefinitely. I was looking for a fiber glass one but could not find it at the time.

It may be interesting to see how long I can go without a water change, to see how long it takes to get a nitrate detect.

Salvinia is a very good indicator of nitrogen availability. It is a natural "nitrate test" , better than the nitrate test itself as plants don't lie. It is nitrogen sensitive and it gets pale, stunted, and old leaves start dying off when nitrogen deficient. Yours is telling you that its ok skipping a water change :) If you add nitrate in the form of fertilizer, it will green up and the leaves will also grow bigger and healthier looking.

When mine has looked the same, it was on its last legs...I love floating plants but the problem I have is that the large emersed plants always outcompete it for nitrogen.

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The rainy season has finally begun here on Taboga, and because my sump is semi open it gets significant rainwater, with the over cast sky, and lots of flower drop, the tank went from clear to a dark tea color in only 3 days. Although nitrate is still undetectable, the pH has dropped from @8 down to almost 7.4
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You can see brown leaching from the flowers.
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Since the tank is outside, all fish, endemic, and many of the local rivers and streams look the same with this seasonal change, I go with the flow.
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Just a little deviation, went down to one of my favorite beach bars the other day on Taboga, not many people in the water, so to show why, and for our entertainment, the bar manager took a cooler pulled out jelly fish.
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might make an interesting tank at some point, they often wash up on the beach en masse during certain tidal events.
 
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A bar I could spend the whole day at.

I like the tannin stained water. Looks good and your tank just keeps looking more and more naturally chaotic. Awesome.
 
Funny in the states I had to work at getting tannins in my tanks, soaking leaves, loading tanks with driftwood, bags of peat, and even reusing old tea bags in HOB filter overflows.
Here I'm removing sticks, and branches, cutting back overhanging vegetation that drip tannins in the tank with the constant rain , and removing some of the aquaponics plants, because the tannins get so dark I can barely see the fish on cloudy days.fullsizeoutput_14be.jpeg
I had to do a 50% water change today just to dilute the tannins, even though nitrate is undetectable.
A surface shot after removing and replacing about 90 gallons.
 
Hadn't seen any of the Vampire Crawdads in over a month, but today one wandered out like it owned the place, and the cichlids left it alone.
I'm wondering if a tank this size is only large enough for one, and their own battling allowed the cichlids to rip apart losers, or those crippled by the fights.fullsizeoutput_14f3.jpeg
 
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