Diatoms?? Please Help

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Jhurst

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My 75 gallon african cichlid tank has been set up and cycled about 10 months to a year, but i cant shake this brown algae mess.. ive tried everytbing, more light, less light, phosguard, cleaned everything and it comes right back.. i am on a well with a water softener, but in 6-7 years in fish keeping its never given me this problem.

TIA
 

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Ernest Sacco

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Jhurst said:
My 75 gallon african cichlid tank has been set up and cycled about 10 months to a year, but i cant shake this brown algae mess.. ive tried everytbing, more light, less light, phosguard, cleaned everything and it comes right back.. i am on a well with a water softener, but in 6-7 years in fish keeping its never given me this problem.

TIA
What type of substrate do you have....also do you know if your water is high in silicates or phosphates...it took my 150 over a year to completely cycle away from diatoms
 
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Ernest Sacco

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Jhurst said:
Im using caribsea black snd white cichlid mix substrate and no i dont know my silcate or phosphate level but i do currently have phosguard in my canister
From what I can see from a quick search the caribsea black sand is known to cause brown algae issues
 
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Jhurst

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Its the mixed blacked and white bags but im sure that doesnt matter, i think im going to try and test my tap water to be sure, my water isnt the source of the problem but ive never switched out substrates on a cycled aquarium before. Ill need to look into that, i have been thinking about switch to straight black sandblasting sand anyway. Will it disrupt my cycle if i were to make the switch?
 

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I'm using white pool sand and I've had Diatom issues for months. Everything I've done doesn't help. From what I've read, everything points to the sand. I'll be swapping out to BDBS.
 

Ernest Sacco

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Jhurst said:
Its the mixed blacked and white bags but im sure that doesnt matter, i think im going to try and test my tap water to be sure, my water isnt the source of the problem but ive never switched out substrates on a cycled aquarium before. Ill need to look into that, i have been thinking about switch to straight black sandblasting sand anyway. Will it disrupt my cycle if i were to make the switch?
It would disrupt it but if you have a good biological filtration setup it wont be detrimental
 
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Jhurst

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Any thoughts on how to determine weather it is coming from the substrate or not?
 
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Any thoughts on how to determine weather it is coming from the substrate or not?
 

Ernest Sacco

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Jhurst said:
Any thoughts on how to determine weather it is coming from the substrate or not?
The only sure way is to test your water...I mean you could do a complete substrate change and see if it goes away but that wouldn't be exactly productive
 
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