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Old 04-22-2014, 03:04 PM
 
Location: Kirkland, WA
64 posts, read 82,927 times
Reputation: 48

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Does anyone else here has aquarium tank and use it to water plants?

I've always wasted my aquarium water when doing regular changes until a few days ago I read it is a great natural fertilizer.

How often can I use it in my plants? Is there any plants who would not like to be watered with fish waste?
I don't know what exactly fish water contains that is beneficial for plants..
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Old 04-22-2014, 04:02 PM
 
Location: Ohio
2,310 posts, read 6,822,200 times
Reputation: 1950
should not be a problem... use as much as you have. Fish waste is nitrogen which plants like.
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Old 04-23-2014, 12:34 PM
 
Location: East of Seattle since 1992, 615' Elevation, Zone 8b - originally from SF Bay Area
44,551 posts, read 81,085,957 times
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I would not use it for indoor houseplants, only outside in order to avoid attracting pests. I only use inorganic indoors (MiracleGro). The reason for changing aquarium water is to remove the high concentration of ammonia, which will burn their fins. If you have not changed the water in more than a couple of months the concentration may burn roots if not diluted 50/50 with fresh water.
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Old 04-23-2014, 01:00 PM
 
Location: Kirkland, WA
64 posts, read 82,927 times
Reputation: 48
Quote:
Originally Posted by Hemlock140 View Post
I would not use it for indoor houseplants, only outside in order to avoid attracting pests. I only use inorganic indoors (MiracleGro). The reason for changing aquarium water is to remove the high concentration of ammonia, which will burn their fins. If you have not changed the water in more than a couple of months the concentration may burn roots if not diluted 50/50 with fresh water.
My tank is established and has beneficial bacteria, so levels of ammonia and nitrite are zero. I change the water mostly to clean the gravel and bring the nitrates level down. Also the fish seems to like a bit of new water now and then - it is like rainfall and they get stimulated to lay eggs.

I never really though using indoors could attract pests. It a great point
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Old 03-23-2015, 09:50 PM
 
1 posts, read 5,222 times
Reputation: 10
it is great for lawns..
I had 4 fish tanks and regularly changed 30% water and poured it in my small front yard lawn.
This lawn always had problems as it was shaded by the house and trees.
not long after I started using the used fish tank water the lawn became "superlawn"
It grew twice as fast as the backyard grass and was greener.
also the plants along fence and lawn in front started booming..
my neighbors started asking what I was doing...
I use to pour the water down the sink, but thought it might help lawn..
wow and the weeds stopped..maybe the grass choked them out..
I never watered my lawn or used and fertilizer on my lawn except this tank water but this was more than being watered..
funny after I moved and bought a new house I drive by old house and that front half of lawn is back to
poor growing moss laiden lawn..lol they dont know my secret..
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Old 03-24-2015, 03:40 AM
 
Location: On the Chesapeake
45,323 posts, read 60,500,026 times
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Did for years when I had tanks. Never had a pest problem with indoor plants.
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Old 03-24-2015, 07:34 AM
 
Location: North West Arkansas (zone 6b)
2,776 posts, read 3,244,991 times
Reputation: 3912
I had a large tank but couldn't use the water. Although it was fresh water, I did add salt as a supplement for the fish
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Old 03-24-2015, 07:55 PM
 
Location: San Antonio
7,629 posts, read 16,447,523 times
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We use to...had a 220gal aquarium before we downsized, the plants right outside the window that we drained our 1/4 tank into when adding fresh water REALLY loved it!
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Old 03-27-2015, 11:18 AM
 
Location: Aiken, South Carolina, US of A
1,794 posts, read 4,910,766 times
Reputation: 3671
That is the secret of great plants that most pond owners understand.
Boy, your plants will grow great!
Most pond owners change water in the pond too, and distribute it to plantings.
The pond is worth it just for that! LOL!
Which reminds me, I have to buy some more fish this year. The more fish,
the better the water is.
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