Oyster shell as a calcium source?

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elephantSea

Well-Known Member
I think you'll be fine on the calcium and magnesium. The oyster shell will obviously supply a ton of cal, but you also are giving them azomite and kelp meal. along with ewc, guano, and bsm in a tea, I'd be shocked if you needed more mag. what's your water source anyways?
 
Rasta Roy

Rasta Roy

Well-Known Member
I've got a 50 gallon resovior with an airstone in it. I fill it up with city water and let it bubble for 24 hours before I use it on my plants.
 
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elephantSea

Well-Known Member
it's important stuff. Not sure where you're at, but some cities have great water. Most of SF for instance, get's their water from the hetch hetchy resevoir in yosemite. My city's water plan is to the brim on the legal amount of everything that they put in the water. It's 450ppm out of the tap. That sucks. Needless to say, I use an RO filter, and bring that down to around 5ppm. which is why I generally need to supplement the cal & mag.
 
Rasta Roy

Rasta Roy

Well-Known Member
I'm in the high five state, I heard my cities water is one of the top rated in the country for taste but I gotta go online and see what's in it. I'll have to pick up some new batteries for my ppm wand I haven't used it since I went organic.
 
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elephantSea

Well-Known Member
meh, throw out the wand. Just check the plan. It's just a simple awareness thing to keep in the back of your head when mixing things together. It sounds like your water is fine though.

also, just throwing this out there :) maybe consider the ecological impact of using/buying bat guano, and get some seabird guano. I have a few bags of sunleaves bat guano too, but I won't be buying more once I use it all up. I've already replaced it all with seabird guano. I'm really liking the seabird guano, and It feels good not supporting the demolishing of bat caves.

I also like growing with the ocean, and seabirds have quite the diet. The teas I've made with seabird guano are wicked.
 
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Rasta Roy

Rasta Roy

Well-Known Member
Yeah I haven't had much use for the wand for a while.

My plants seem to like the water just fine but definitely best to know what I'm putting into my girls!
 
Rasta Roy

Rasta Roy

Well-Known Member
elephantSea said:
meh, throw out the wand. Just check the plan. It's just a simple awareness thing to keep in the back of your head when mixing things together. It sounds like your water is fine though.

also, just throwing this out there :) maybe consider the ecological impact of using/buying bat guano, and get some seabird guano. I have a few bags of sunleaves bat guano too, but I won't be buying more once I use it all up. I've already replaced it all with seabird guano. I'm really liking the seabird guano, and It feels good not supporting the demolishing of bat caves.

I also like growing with the ocean, and seabirds have quite the diet. The teas I've made with seabird guano are wicked.
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I got a couple big ol' bags of seabird guano, along with a few different bat guanos. They claim to harvest from sustainable sources though, they get away with lying?? Do you ever worry about too much nitrogen from the seabird guano while you're in flower?
 
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elephantSea

Well-Known Member
I'll be honest, I'm not too familiar with sunleaves harvesting techniques, or if they're even the ones doing the harvesting. But it's simple enough to avoid either way, so I choose to.

there are high phosphorous sb guanos that dont have the nitrogen. I think down to earth makes one, Dr earth maybe too. Roots organics has a seabird guano at 0-7-0.

a bit of fishbone meal, and the sunleaves sb guano at the start of flower, and I can generally get by with just the high p sb guano for the rest of the time. I suppose there's a bit of n in the ewc too. But I generally get fairly yellow leaves towards the end. It's easy enough to add a bit of n if they yellow too early.

I'm also a huge kelp fan. the kelp, oyster shell, fishbone meal, and sb guano in my soil, makes me feel warm inside.
 
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Rasta Roy

Rasta Roy

Well-Known Member
Hell yeah sounds like a good mix. I always use lots of kelp. I've got a big bag of fish bone meal to use and I'll look into the high phosphorus seabird guano once I run out of the bat guanos I've got in stock. You ever mess with any of those bottles of seabird guano? I'm intrigued but I'm always worried I'm just paying for water.
 
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elephantSea

Well-Known Member
I haven't really seen much bottles of seabird guano. But I'd guess they're not worth the money, or as rich in nutrients. there's just something about the dry ingredients and the substance it brings to a grow that I find attractive. IMO of course.

I feel like I could make dozens of bottles of liquid seabird guano from just a small bag of dry seabird guano. lol.
 
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