Sent from my XT1585 using Tapatalk
Sent from my XT1585 using Tapatalk
Biological media provide large surface area in small volume for bacteria, water pump carry ammonia and nitrite from water column to bacteria to convert to final product nitrate.So then what's the point of biological media in a filter?
What Wong said.Biological media provide large surface area in small volume for bacteria, water pump carry ammonia and nitrite from water column to bacteria to convert to final product nitrate.
Sent from my MX4 using Tapatalk
Defeat what purpose? In reality, there will always be beneficial bacteria in even the heaviest of planted tanks...even in a Walstad tank. It's just that the colony(ies) size will likely be smaller in the planted tank as there will be less food in the form of ammonia and nitrite.I am doing a walstad tank and was reading that some people choose to use mechanical filtration. Obviously using biological filtration would defeat the purpose and make the walstad tank a lowtech tank.
My question is, wouldn't mechanical filtration become biological if it is not cleaned?
The bacteria would grow on it and cause it be biological right?
I don't really think you've interpreted wrong, but what exactly do you think the difference is between Walstads method and "just..a lowtech dirted tank"? I think you're getting hung up on the term biofilter. I'm certainly not a Walstad expert (far from it) but I think you're getting hung up on the no bio filter thing. You'll have bio filtration, you just won't have a specific piece of equipment and specific media who's only purpose is bio filtration. The entire tank is your bio filter.Hey thanks for replying, I honestly didn't expect so much response lol!
Okay so obviously beneficial bacteria is going to be in the tank no matter what and that's great but wouldn't allowing a large amount of bacteria to grow on media deprive plants of nutrients?
Oh and I'm right there with you abbeysdad about not using over priced media, I use bioballs (they're also good to cycle new tanks) and polyfill (pillow stuffing!)
What I'm trying to figure out is how can I still have mechanical filtration without having biological?
If I have interpreted Diana Walstads method wrong please let me know but I thought a big part of it is not having a biofilter and very few water changes once its up and running. Otherwise wouldn't it just be a lowtech dirted tank?
As far as I can tell the difference between a lowtech dirted tank and a Walstad tank would be the use of filters and frequent water changes. This is a really basic run down of the Walstad method Walstad method - The Free Freshwater and Saltwater Aquarium Encyclopedia Anyone Can Edit - The Aquarium Wikibut what exactly do you think the difference is between Walstads method and "just..a lowtech dirted tank"? I think you're getting hung up on the term biofilter.
Like I said I understand that there will be beneficial bacteria all over the surfaces of the tank.The entire tank is your bio filter.
you just won't have a specific piece of equipment and specific media who's only purpose is bio filtration.
This is exactly what I am trying to achieve. I don't want the plants competing with the bacteria.The method goes like this. The beneficial bacteria in the soil will detoxify ammonia and nitrite. Since it also contains denitrifying bacteria, it will also remove nitrates. These nitrates are then consumed by plants. Soil will also release carbonates which will stimulate plant growth. Fish waste and uneaten food will be converted by the bacteria into a level useable by plants.
Hmm so are you saying plants might out compete the bacteria to the point that there wouldn't be much bacteria anyway? I think what I'll do is just keep using the filter for water movement and only put polyfil in if the tank looks murky. That's what I've done the last few days to get rid of the mess that putting the plants in causedA key here is that plants prefer ammonia/ammonium as their nitrogen source and as such, they will out compete bacteria resulting in a rather small beneficial bacteria colony(ies).
A mechanical filter with just sponge would be just fine, primarily to circulate water, but trapping some detritus is just fine. Sure, perhaps some BB will also live there, but so be it.
In a fish only tank, beneficial bacteria colony(ies) (nitrosomonas and nitrospira) will grow in size according to the available food (ammonia and nitrite) and oxygen. In a planted tank, hungry, growing plants will use ammonia as their primary nitrogen source. That being the case there will be less food for bacteria, resulting in smaller colony(ies). This is merely a natural balance and is a good thing, resulting in lower nitrates.I've never thought about the bacteria competing with the plants and I really have no basis for saying that I thinks it's just completely a non factor.