Can you keep a nicely planted high tek tank with only 20% wwc? - The Planted Tank Forum
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post #1 of 6 (permalink) Old 08-02-2020, 04:39 AM Thread Starter
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Can you keep a nicely planted high tek tank with only 20% wwc?

Hi, so I am now back in the world of planted aquariums after two decades. On those two decades there was a period I even had a reef tank, so I gained a lot of experience in the aquatic world. But things have changed, now people talk about heavy fert dosing and 50% weekly water changes twice per week, even.

I did my research to come back to the planted tank world, but I wasn't expecting those water changes twice per week.

My tank is 3 weeks old now and I'm getting an algae bloom which I'm sure is normal, correct? I mean I've seen the phenomenon in my previous reef aquarium. So algae should go away, correct?

So according to recommendations, I should be making those 50% wc twice per week, but I must confess I'm only doing 40% once a week.

My question is, once things normalize, can I keep a nicely neat planted tank with let's say 20% water changes weekly or even every 2 weeks?

I'm just getting bogged down with all the expenses and the maintenance I wasn't expecting.

I can totally sacrifice having fish. What is your opinion?
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post #2 of 6 (permalink) Old 08-02-2020, 02:55 PM
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I'm not sure where you're getting your water change "requirements" from. IE dosage is commonly done with high tech tanks. That typically calls for somewhat overdosing the ferts and performing a 50% weekly WC to reset the amounts in the water column. PPS Pro plan gets a little more accurate on the doses and doesn't require as much of a water change. 20% twice a week might be stretching it a bit, but it depends on your tank and your bio load and your fertilization method. I don't usually see people talk about 50% twice a week water changes unless they're keeping discus or other sensitive species.
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post #3 of 6 (permalink) Old 08-02-2020, 04:07 PM Thread Starter
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Yes PPS Pro is the one I wanted to follow. So if I do so will I be fine with WEEKLY 20% WC?

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Originally Posted by Kubla View Post
I'm not sure where you're getting your water change "requirements" from. IE dosage is commonly done with high tech tanks. That typically calls for somewhat overdosing the ferts and performing a 50% weekly WC to reset the amounts in the water column. PPS Pro plan gets a little more accurate on the doses and doesn't require as much of a water change. 20% twice a week might be stretching it a bit, but it depends on your tank and your bio load and your fertilization method. I don't usually see people talk about 50% twice a week water changes unless they're keeping discus or other sensitive species.
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post #4 of 6 (permalink) Old 08-02-2020, 04:14 PM
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Originally Posted by Arturosito View Post
Yes PPS Pro is the one I wanted to follow. So if I do so will I be fine with WEEKLY 20% WC?
It's what I do, and have been doing it for years.
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post #5 of 6 (permalink) Old 08-03-2020, 09:14 PM
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Do you test your water parameters? Both in your tank, water used to make changes, and then again after adding said water?
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post #6 of 6 (permalink) Old 08-04-2020, 02:00 AM
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You need to decide if you'll be an aquatic gardener, or have a fish tank with plants.
The EI and some other methods for high tech tanks do add extra ferts to achieve maximum growth...but maximum growth will require more maintenance.

There are many heavily planted tanks out there with fish that use only modest ferts. The race doesn't always go the the swiftest....what's the rush anyway?

As far as the 'required' frequency/volume of water changes, it's relative to bio-load and feeding (and in some cases additives) with no magic numbers as tanks and situations can be quite different. I can say that typically, there's usually no such thing as too much fresh water and the 'solution to pollution is dilution'. So you could get away with 20% weekly...but when you do it, is 50% really much more trouble?!?!


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