SantaMonica
Well-known member
If it's to start a scrubber, it really won't help. A scrubber needs to develop on its own.
Certainly. If very over powered, you get no growth at all. But usually you just get yellow growth.
Algae Scrubber Basics
- Thread starter srusso
- Start date
If it's to start a scrubber, it really won't help. A scrubber needs to develop on its own.
Certainly. If very over powered, you get no growth at all. But usually you just get yellow growth.
Algae Scrubber Basics
Right. It's to kickstart a fuge environment to support micro foods for raising fry.
Edit: I'd still be glad to buy someone's scrubber harvest.
Right. It's to kickstart a fuge environment to support micro foods for raising fry.
Edit: I'd still be glad to buy someone's scrubber harvest.
salty joe
Active member
I agree, potassium is worth testing for. If you need to add some, reagent grade potassium chloride is not too pricey on Ebay.
It's been awhile since I did it, but you can get the molar weight/molarity of potassium and chloride from the periodic table and calculate how many grams to use. I'm no chemist-if my terms are wrong, someone please fix
It's been awhile since I did it, but you can get the molar weight/molarity of potassium and chloride from the periodic table and calculate how many grams to use. I'm no chemist-if my terms are wrong, someone please fix
jrp1588
New member
I agree, potassium is worth testing for. If you need to add some, reagent grade potassium chloride is not too pricey on Ebay.
It's been awhile since I did it, but you can get the molar weight/molarity of potassium and chloride from the periodic table and calculate how many grams to use. I'm no chemist-if my terms are wrong, someone please fix
My brother is a chemical engineer. I'll outsource the calculations to him. haha
Floyd R Turbo
Either busy or sleeping
You can use potassium water softener salt, Home Depot ~$25 for a 50 lb bag, dissolve into a saturated solution, keep it mixing to offgas for a couple hours, then drip through dry GFO, that's what Justin Credable does. PS you can't really OD on K - he's runs gonio tanks with 1000ppm K and just fine
jrp1588
New member
Hmm, contains phosphate I guess? I don't have any GFO on hand. I was hoping to begin dosing this weekend, but the LFS didn't have any potassium supp.
SantaMonica
Well-known member
Just blend some bananas and put them in to feed the corals too.
sde1500
Active member
karimwassef
Active member
Wait - really? Do you actually do that?
jason2459
Well-known member
Morish idols like bananas. But don't think I would do that for corals.
Scuba_Steve
Premium Member
I have read a very large portion of this thread in the past. I forgot a good deal though. Can someone link me the most current recommended setup info. I know there is a website in here somewhere that tells you how to build it and size it from a-z.
I am building a small 30g total volume build, with about a cube a day food volume.
I found the zoho calculator.
https://docs.zoho.com/sheet/published.do?rid=b0tmj6d91ce368ee542aba6b2b670ae00412b
I need the diy design instructions.
Also any easy acrylic examples would be great!
I am building a small 30g total volume build, with about a cube a day food volume.
I found the zoho calculator.
https://docs.zoho.com/sheet/published.do?rid=b0tmj6d91ce368ee542aba6b2b670ae00412b
I need the diy design instructions.
Also any easy acrylic examples would be great!
Floyd R Turbo
Either busy or sleeping
karimwassef
Active member
I am now feeding bananas
Apparently.. tangs and surgeons love them.
Apparently.. tangs and surgeons love them.
Floyd R Turbo
Either busy or sleeping
Just an example here:
Brightwell Potassion Concentrate
This has nearly 2400mg potassium per fluid ounce (1 fl oz = ~28000mg or 28g)
One mL increases the K in 1g of water by 21 ppm
In contrast, google tells me that a medium (118g or 4.16oz) banana contains approximately 442mg of potassium
So one banana is over 4 times to mass of one dose of the Brightwell stuff, and has less than 20% of the potassium.
If you had a 75g tank and wanted to raise the K ppm by 1ppm, you would have to add about 3.5 fl oz of Potassion, or 19 medium bananas
Feeding bananas in general, not a problem. I think more than one person here benefited from that suggestion.
But it's not going to add a significant amount of potassium into the system, not enough to correct a deficiency. Or even probably make any kind of difference between now and the time someone gets a hold of some potassium dosing supply.
Brightwell Potassion Concentrate
This has nearly 2400mg potassium per fluid ounce (1 fl oz = ~28000mg or 28g)
One mL increases the K in 1g of water by 21 ppm
In contrast, google tells me that a medium (118g or 4.16oz) banana contains approximately 442mg of potassium
So one banana is over 4 times to mass of one dose of the Brightwell stuff, and has less than 20% of the potassium.
If you had a 75g tank and wanted to raise the K ppm by 1ppm, you would have to add about 3.5 fl oz of Potassion, or 19 medium bananas
Feeding bananas in general, not a problem. I think more than one person here benefited from that suggestion.
But it's not going to add a significant amount of potassium into the system, not enough to correct a deficiency. Or even probably make any kind of difference between now and the time someone gets a hold of some potassium dosing supply.
jrp1588
New member
Hah, I have a feeling it would take comically large doses of bananas to make any difference. I've got an order in for some of the Potassion powder and a Salifert K test. I did a waterchange yesterday, but the salt I use advertises only 300ppm K, so I'm betting I'm pretty low with the huge handfuls of algae I pull out.
Hey guys, I was wondering if anyone else has this problem.... every time I clean the algae screen in tap water it seems to die and basically has come back from the dead every week. When I first clean the screen it is bright green like normal. But after a day it will turn yellow and then turns brown after about 3 days. It won't be until day 5 or 6 that the screen returns to a good green color. Does any one have any ideas to speed this process up? I've tried dosing iron and it did not seem to help.
This picture is taken about 3 days after cleaning half. As you can see one side is nice and green and the other is brown. It just turned brown this morning after it has been yellow for the last two days.
Floyd R Turbo
Either busy or sleeping
Hard to tell from the pic, but I have zero issues with FW cleaning a mature screen.
It could be over-cleaning. Think of it as harvesting. Leave a very decent amount of growth on the screen.
When using a scraper, don't scrape with a chiseling action. Instead, "drag" the scraper to loosen growth, and leave 25% behind for the next cycle.
The issue could be that until you get X% of growth, the screen is over-lit and grows yellow. Then once your base of growth recovers, it starts kicking in green because there's enough of a base to take that light. Think of this as your "minimum base" level of growth.
Over-cleaning results in removing enough such that you are below that base.
also this could be only temporary, or could be something else - a few questions:
how old/mature is the screen?
How old is the tank?
How much do you feed?
Scrubber lights? type and intensity, etc
Photoperiod?
Size of screen (LxH)?
Lit on both sides?
pics, pics, pics!
It could be over-cleaning. Think of it as harvesting. Leave a very decent amount of growth on the screen.
When using a scraper, don't scrape with a chiseling action. Instead, "drag" the scraper to loosen growth, and leave 25% behind for the next cycle.
The issue could be that until you get X% of growth, the screen is over-lit and grows yellow. Then once your base of growth recovers, it starts kicking in green because there's enough of a base to take that light. Think of this as your "minimum base" level of growth.
Over-cleaning results in removing enough such that you are below that base.
also this could be only temporary, or could be something else - a few questions:
how old/mature is the screen?
How old is the tank?
How much do you feed?
Scrubber lights? type and intensity, etc
Photoperiod?
Size of screen (LxH)?
Lit on both sides?
pics, pics, pics!
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