Always have algae on glass. - The Planted Tank Forum
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post #1 of 29 (permalink) Old 03-30-2018, 11:53 PM Thread Starter
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Always have algae on glass.

Tank is 2.6g Fluval Spec 3.
Substrate is Fluval stratum.
Plants are stem plants and a java fern. Removing A R tomorrow. Light is standard light that came with kit on 1 hour in am and 6 hrs in pm. I dose .50ml Thrive once a week.
Weekly water changes.
Ammonia and nitrites are 0, nitrates around 20 or less.

What do you think I need to do to balance this tank??

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post #2 of 29 (permalink) Old 03-31-2018, 12:20 AM
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How long has the tank been set up? I'm assuming it's diatoms if the algae is brown.

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post #3 of 29 (permalink) Old 03-31-2018, 12:28 AM Thread Starter
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How long has the tank been set up? I'm assuming it's diatoms if the algae is brown.

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Set up 11-24-2017. The algae is green and only on the glass. I battled hair algae in the beginning but got under control by adding more plants and lowering my light period. I wipe off this greenish yellow algea off the glass at least once a week but it just comes back. None on plants.

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post #4 of 29 (permalink) Old 03-31-2018, 12:29 AM
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Get a nerite or two. They love glass algae, with the excpetion of GSA. Or just leave it be for awhile and scrape it off. It'll die back soon enough. Tank isn't fully matured yet is all. Not bad thing to have some algae and bio film...especially for those shrimps.
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post #5 of 29 (permalink) Old 03-31-2018, 12:52 AM Thread Starter
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Get a nerite or two. They love glass algae, with the excpetion of GSA. Or just leave it be for awhile and scrape it off. It'll die back soon enough. Tank isn't fully matured yet is all. Not bad thing to have some algae and bio film...especially for those shrimps.
Can't do a nerite as I have a pea puffer. Shrimp are gone too.

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post #6 of 29 (permalink) Old 03-31-2018, 01:34 PM
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Nerites are way too big for a pea puff to do anything to. I even keep them with south american puffers. Only thing is if you get a pair they'll lay dormant eggs everywhere so just get one large one

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post #7 of 29 (permalink) Old 03-31-2018, 02:04 PM
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What are your phosphate levels like? When mine creep up I start seeing more and more GSA.

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post #8 of 29 (permalink) Old 03-31-2018, 04:14 PM Thread Starter
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What are your phosphate levels like? When mine creep up I start seeing more and more GSA.
Not sure. Should I invest in a test for phosphates?

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post #9 of 29 (permalink) Old 03-31-2018, 05:25 PM
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What are your phosphate levels like? When mine creep up I start seeing more and more GSA.
GSA shows up when phosphates are low not high.
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post #10 of 29 (permalink) Old 03-31-2018, 05:27 PM
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GSA shows up when phosphates are low not high.


That has not been my experience.


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post #11 of 29 (permalink) Old 03-31-2018, 05:30 PM
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Originally Posted by psalm18.2 View Post
Tank is 2.6g Fluval Spec 3.
Substrate is Fluval stratum.
Plants are stem plants and a java fern. Removing A R tomorrow. Light is standard light that came with kit on 1 hour in am and 6 hrs in pm. I dose .50ml Thrive once a week.
Weekly water changes.
Ammonia and nitrites are 0, nitrates around 20 or less.

What do you think I need to do to balance this tank??

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From the picture, itís looks like you need to up your dosing. Algae thrives when nutrient levels are low. Id start by dosing twice a week for a few weeks and see where that gets you. As for the algae, if itís green let it build up for a couple weeks. Then scrape it all off and do a big water change.

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post #12 of 29 (permalink) Old 03-31-2018, 11:08 PM
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From the picture, itís looks like you need to up your dosing. Algae thrives when nutrient levels are low. Id start by dosing twice a week for a few weeks and see where that gets you.
I would agree with that. Furthermore some of the leaves lookalike they have a hooked leaf tip. This is a common symptom of calcium deficiency. Most fertilizers don't have calcium. I would get a GH and KH test kit and test your water hardness. Then increase the hardness by 2 degrees GH using Sachem Equilibrium. Equilibrium contains Calcium, magnesium, sulfur, potassium, iron, and manganese. Plants need all of these. But it doesn't have all the other nutrients plants need. A good fertile like thrive (available at Nilocg.com) would take care off the remaining nutrients.

When plants have all the nutrients they need to grow algae Tends to grow very slowly. Slow enough that one or two nerits should be able to keep most of the glass clean. Hair algae is good indication of very low nutrient levels in the water. GSA (hard green spot algae) is typically in indication of low phosphate levels in the tank. neuritis cannot remove GSAas rock because it is as hard as rock. Thrive should provide enough phosphate to prevent GSA. It is hard to tell but I think you have green slime algae on the glass. nerits would easily be able to remove it.
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post #13 of 29 (permalink) Old 04-01-2018, 01:30 PM Thread Starter
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The algae easily wipes off, I do it all the time with a sponge made for that. I use Thrive, 1 dose of .50ml once per week.
The a reneckii is now gone so I'll be only feeding the ludwigia, a few val and the java fern for now. I plan on adding more plants once I decide what to do in there. I'm against the nerite because I have the puffer who is aggressive towards snails.
I'll get my KH and GH numbers later today.

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post #14 of 29 (permalink) Old 04-01-2018, 01:44 PM
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The algae easily wipes off
If that's the case then it's likely GDA (green dust algae). GSA (green spot algae) is really hard and generally requires a razor blade to remove from the glass.

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post #15 of 29 (permalink) Old 04-01-2018, 09:06 PM
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I would add in some floating plants. They'll reduce the light without you having to shorten the light period. That should help with algae. They will also let you assess the nutrients better, as they have free access to CO2 in the atmosphere and the light at the top of the tank, you can use them to judge your fert dosing. If they do well you know you have it right, if they look a bit sad you know you need to add a bit more ferts.
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