changing substrate, how to? - The Planted Tank Forum
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post #1 of 5 (permalink) Old 07-02-2011, 01:59 AM Thread Starter
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changing substrate, how to?

so in a week or so i'm going to be replacing my current substrate (mixed with gravel and eco) to either all eco or something else.

would that require me to cycle all over again? it'll probably be shorter with all my plants and filters running but... i dont know what to do with all my livestock in the mean time... unless someone else has a better solution. thanks!
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post #2 of 5 (permalink) Old 07-02-2011, 02:26 AM
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i did this a few years ago. I took the fish out and put them in a large bucket, took out as much water from the tank as possable, scooped out the gravel (boy did that smell lovely), put in new substrate, added water, and let the filters run over night before i put the fish back in because i wanted to wait for the florite dust cloud to go away.
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post #3 of 5 (permalink) Old 07-02-2011, 02:48 AM
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i did this when switching from gravel over peat moss to mts capped with pool filter sand. i just saved 50% of the water and put the fish in a bucket, pulled up all my plants, and hosed out the mess, and added a whole new one haha (not really, i rinsed the pfs thoroughly so no cloudiness). i then put the saved water in, then planted, then the fish, then filled the tank. not a single problem. took me maybe two hours total.

if you are worried you can get some bacteria to add to the tank to replace the lost ones.

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post #4 of 5 (permalink) Old 07-02-2011, 02:52 AM Thread Starter
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sweet, i think im gonna do that.
i think i'll take out 50% of the water first to save
stir up substrate to get some bacteria out. lol
take out substrate and remaining 50% water to throw out
put in new subs
put in new water and old water
run over night
check parameters

how's that sound?
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post #5 of 5 (permalink) Old 07-02-2011, 02:53 AM
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A few months ago, I swapped tanks, along with it, I replaced my old gravel with Fluval Stratum (it doesn't leech ammonia like ADA soil). I didn't experience any deaths, and no algae bloom with brand new substrate. My tank was quite well planted with a good canister filter. I would think you'd be okay, maybe do more frequent water changes for the first two weeks if you are worried.
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