dave72787
Community Member
Does the container on the right look like it crashed? I let it go about 12 days to get a darker green, but it kind of looks brownish, it doesn't smell at all. The one of the left was my last culture .
Live phytoplankton culture question.
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dave72787
Community Member
Well im harvesting it today , cleaning the container and starting a new one, but im wondering if I should just use the original thats been in my fridge that looks lighter green or this darker almost yellow one.....
Subsea
7500 Club Member
If it has started going downhill, I would not use it to start a new culture, but feed it to system. Use your refrigerated culture to start new culture. Consider adding more fertilizer next time.
JGT
5000 Club Member
Doesn’t look bad but both cultures look a bit light. As Subsea said make sure you are adding enough F2. I make mine in a similar sized container with spigot made for drinks 
and add 5/6 ml of F2. My culture is deep, dark emerald green and lasts for months.
and add 5/6 ml of F2. My culture is deep, dark emerald green and lasts for months.
dave72787
Community Member
Well too late lol, I think my next culture ill order a nice brand new one and start over again, do you guys just use like algae barn phyto as a starter culture? And yes the container is a 2 gallon jug that i give 8 ml of f2 every Sunday when I harvest...... wondering if im doing something wrong , I leave half the culture in and add a new gallon of rodi mixed saltwater to it
Doesn’t look bad but both cultures look a bit light. As Subsea said make sure you are adding enough F2. I make mine in a similar sized container with spigot made for drinks
dave72787
Community Member
Crap I should have added this, my led lights broke and it was in darkness for like 5 days , is it possible the fertilizer didnt have any light to do anything and maybe this week it Will improve, or did I kill everything lol again it doesn't smell at all , at the bottom when I just cleaned it I saw algae clumps at the bottom , not alot but enough to cover maybe 10% of the plastic bottom
JGT
5000 Club Member
Got mine from an R2R member Eldredge few years back. Been growing my own ever since.
Sounds like plenty of F2, maybe too much.
I only add F2 when I renew the culture when it is around 1/2 full as well but that is like every 1-2 months.
Last edited:
JGT
5000 Club Member
IMO experience it doesn’t need a ton of light. As long as it got some ambient light for 5 days it should be fine. I use a 40 watt incandescent bulb on a timer for 10 hrs/day.
It looks super light for 12 days and I would restart it. I've had amazing luck ordering from @ReefLegends or Reef by Steele...
What strain is that? Nanno or Tetra?
That's definitely too light for 12 days. Mine looks darker than that when I harvest and restart my cultures.
dave72787
Community Member
Well it spent 5 days in complete darkness before I got new lights and I wasn't "allowed" to bring it by any windows lol so we will see if it gets nice and dark this time or if the whole thing crashed.
I missed this aspect. I would throw more fertilizer in it and give it some time then.
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