Which would be better for plant growth?
Would seachem excel and seachem root tabs be better or a mini pressurized co2 kit? This is assuming the substrate is just plain old aquarium sand.
Also, how many pounds would I need of the aformentioned sand per gallon in a planted tank?
Thanks in advance!
ive used I think it was like 2lbs per gal for my 55..
id stay away from ecel, it puts a limit on what plants you can have. if you really want to go with extra carbon get a pressuised system, yeast based systems are far to sporatic to be of any use.
You can't really use a per gallon rule when calculating substrate... For example, enough sand for a 20 gallon tall wouldn't be nearly enough for a 20 gallon long.
I use soil substrates to provide co2 and nutrients, but many people have good luck with flourish comprehensive and root tabs without the extra carbon source. In a stocked tank without major surface disturbance, there's a lot more co2 than people expect. As long as you don't pick any "hard" plants (like small foreground plants and red plants) you'll do fine without added co2.
Byron's guides on the planted forum index are very informative and might help you decide.
I've read about to many people seeing algae outbreaks when using DIY co2 even with the refreshing to recommend them but each system is unique
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How regulated does CO2 need to be for it to be useful ? I don't have any idea.
I guess I am a Wisenheimer but I have to ask when injecting co2 into your tank do you ever have an uncontrollable urge for a glass of seltzer water?? What is the difference between injecting co2 into your aquarium and adding small amount of club soda? Can we sweeten the aquarium by adding a little tonic water too?
Another aspect is adding fertilizer tabs to the water column appears inconsistent to me. We spend such effort resolving problems related to nitrogen in our aquariums, yet the plant crowd always adds more nitrogen and other organic compounds, increasing the total amount of nitrogen possibly enhancing the tds and negatively impacting ph. This behavior seems to me as ‘back-tracken’ going in the wrong direction, Away from the balanced system.
It’s reasonable to assume everyone will reject this view with statements about the benefits of live plants.
seltzer water has additives in it. it is also not a continuous application like injecting CO2.
And I'm not understanding your question about nitrogen. fert tabs if utilized correctly keeps the nutrints in the substrate level where the nitrogen will eventually be transfromed into plant growth. nothing should be released into the water column..
I have a tank stuffed full of plants. once I left water changes for 4 months. TDS ended up around 140... I also fertilized on a regular basis
As far as sand goes, a 30" x 12" bottom requires about 40 to 50 lbs of unrinsed playsand to reach a depth of between 2"-3"... so I would say about 18 lbs per square foot of bottom depending on how deep you want it.
I suit the plants to the environment just like we try to do with fish and water parameters... although I have done some experimenting with mixed results and am about to change my lighting, I don't anticipate ever using CO2 in my current tanks.
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