Adding CO2 to Pond?


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Sounds like your plants are starving. Your friend is right about CO2 in an aquarium. But in an aquarium it is not simply injecting CO2, and 'bing' you get luscious growth. A soda CO2 system you describe will never have enough output to make any difference in your pond unless your water volume is less than say, 20-gallons or so. The lilies can enjoy unlimited C02 once they break the water's surface. The path to success is what the others above have stated. Feed your plants. Your swords need to be planted in very shallow water and they will grow emersed, again receiving unlimited C02. Swords are real nutrient hogs. If you can make it happen, plant your swords in plant-specific substrate and fertilize them. Finally, please send some of your warm weather north!
Well, I fed the lillies and the easy to reach plants. I'll keep adding more. I had thought that lots of fish would help. I have more fish. Pushing on the fertilizer front.

I'll probably see if I can hook up the CO2 thingy, because it was an interesting project. But I appreciate from here that it was probably a waste of money and won't make a difference, at least not a large one.
 
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Lilies ALWAYS need a ton of fertilizer, no matter how many fish you have. They are heavy feeders number one, and number two they are generally in pots. I have one dwarf lily that I planted free range in my pond - I still fertilize it.
 
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Sounds good. I am fertilizing right now. Al my stuff are in pots. Any decent liquid fertilizers I can add to water instead of shoving tabs in the pot?

Florida sounds wonderful because we can do this year round. It also means no break. It’s easy to intensively garden for 4 months than 12…
 
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Tabs will be better because Lillie's are heavy root feeders. Liquid fertilizer will also feed algie before it gets a chance to get neer the roots.

I prefer a organic potting mix or just dirt out of the garden. Just a thin layer of dirt 1" cap it with 2" of sand then pebbles on top. Keeps all the nutrients right at the roots. Best part it a once a year thing. Just don't use a pot with mesh just a standard pot.

Walstad Method
 
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Tabs will be better because Lillie's are heavy root feeders. Liquid fertilizer will also feed algie before it gets a chance to get neer the roots.

I prefer a organic potting mix or just dirt out of the garden. Just a thin layer of dirt 1" cap it with 2" of sand then pebbles on top. Keeps all the nutrients right at the roots. Best part it a once a year thing. Just don't use a pot with mesh just a standard pot.

Walstad Method
Better is fine for the next month or two when I stay on top of it. As the year drags on, I'd like something lower maintenance. But I'll stick to tabs for now and see how that goes.
 
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I don’t add nitrogen as I’ve had trouble with algae blooms, but I do add Maxicrop seaweed powder, magnesium sulfate, and iron chelate once a month. My nitrate hangs around 5 ppm which seems to be enough for my plants. Because I regularly remove vegetables from the system, I probably have to supplement more than most.
 
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I don’t add nitrogen as I’ve had trouble with algae blooms, but I do add Maxicrop seaweed powder, magnesium sulfate, and iron chelate once a month. My nitrate hangs around 5 ppm which seems to be enough for my plants. Because I regularly remove vegetables from the system, I probably have to supplement more than most.
Maxicrop msds

The MSDS on maxicrop has it listed as 1% nitrogen. I see the bag is 0-0-17 but after bacteria brake it down that 1% has to come out in some form.
 
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There are slow release fertilizer tabs you can use. Similar to this one:


Some even advertise once a year usage. I know @addy1 does Osmocote once a year, but she's like most of us - she's really only feeding for the warm months. You'd need to adjust for your always warm to hot climate.
 
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So I added the tabs. Tested with one for each lillie, went great. Two weeks later, better leaves. We're getting some consistent flowering. Today I added 2 tabs to each lillie and one to each other 1g pot. We'll see how it goes. However, lying down on the ground and sticking my arm in the pond every two weeks is not viable. IF this goes smoothly, I'll try the spikes.

If I have to add 3x/year, that's fine. Thats what I do with my garden as well.
 
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If I have to add 3x/year, that's fine. Thats what I do with my garden as well.

Give them a good dose of fertilizer when you repot them and they should be good for many weeks. I do like the spikes better than the tabs - they're more durable when you are trying to jam them into an overgrown pot! The tabs seem to crumble too easily for me.
 
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There are slow release fertilizer tabs you can use. Similar to this one:


Some even advertise once a year usage. I know @addy1 does Osmocote once a year, but she's like most of us - she's really only feeding for the warm months. You'd need to adjust for your always warm to hot climate.

Osmocote sounds intriguing. Pull the pots out, fertilize them, add them pebbles/gravel, resink them. Even if I did it 2x/year that much more manageable than the tabs. The travertine border is too hot to lie on in the summer... LOL.
 
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BTW: I have been fertilizing for a few weeks. The growth is obvious now. You can tell which pots I got a few weeks ago vs. not. The CO2 booster I've been adding -- no idea if it does anything. If I wanted to really boost things and add the Leaf Coverage fertlizer, I think I'd need to turn off the pumps when I add it, otherwise I think it'll just fertilize the bogs.

I'm very happy with the addition of the fertilizer. I'm going to stop the CO2 booster in a few weeks, not convinced it does anything, but things are going well right now so I'll keep pushing.

I have a gas blender to mix the air pump and the CO2 infusion, so a singular tube to the diffuser can handle both - Air overnight, CO2 gas for a bit in the morning. Nothing during the day when we look at fish. I'm also not convinced this will make much of a difference in my open air pond, but it's been a fun project to build out. If it does work, I'll likely switch from Soda Stream refills to real CO2 canisters. Refilling them is annoying, but 2x/year is doable, and I have a 5lb and a 10lb not in use from an old project, so getting them inspected and filled could work, I just have to hide the large canisters.

I have been enjoying treating my project as a hybrid pond/aquarium. I've definitely enjoyed some of the aquarium hacks, including the varieties of fish. Was out in full sun today... wow, all the fish are popping, it's gorgeous, including all the "wrong" fish.
 
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As long as your having fun there is a CO2 drop checker and it's under 20$. It helps get the CO2 at the perfect level for the plants.

As long as the fish have good water almost nothing is wrong, if your have fun.
 
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I'm going to stop the CO2 booster in a few weeks, not convinced it does anything,
OH CO2 WORKS I CAN ASSURE you ! and if you were providing optimum dosaging you would not question if it worked or not , you would be ripping out aquatic growth left and right.
 
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I'll probably see if I can hook up the CO2 thingy, because it was an interesting project. But I appreciate from here that it was probably a waste of money and won't make a difference, at least not a large one.
Naw, not a waste of money. What the heck, we need to experiment with our ponds and have fun. That's what it's all about. After you try it out in your pond, you can always use it indoors in an aquarium. Is it a yeast reactor or pressurized system?
 
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OH CO2 WORKS I CAN ASSURE you ! and if you were providing optimum dosaging you would not question if it worked or not , you would be ripping out aquatic growth left and right.
I believe CO2 works, API CO2 Booster product is what I’m not sure of.

Okay we’re excited for CO2 tanks.
 
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Naw, not a waste of money. What the heck, we need to experiment with our ponds and have fun. That's what it's all about. After you try it out in your pond, you can always use it indoors in an aquarium. Is it a yeast reactor or pressurized system?
Pressurized - testing with soda stream little ones, may switch to bigger later.
 
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So I’m not going to dismiss the CO2 Booster (liquid) but adding fertilizer has DEFINITELY made a difference.

The growth in the fertilized pots picked up immediately - they now all are done. One of the plants that did nothing but sit there has grown several inches, branched out, and now may crack the surface.

The fertilizer diagnosis was on point.

Thing I love about the Oase Biosmart - it’s so easy to clean, open drain pull handles. While I’m futzing with the pond I might as well clean them. When the sponges are clean the water looks polished.

Can’t wait to have some free time to add more gravel.

I love the advice here. I love that I can play with the pond for a few weeks and then go back to low maintenance mode. The bigs are truly a miracle.
 
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