Originally Posted by CmLaracy
SO! I figured it out. We have very sandy soil, it allows us to have a septic. The rain water that gets filtered through the sand ends up in our well.
Looks like I need an RO/DI filter. Shoulda known when 50% daily WC's doesn't kill the diatoms after a while... I'm actually FEEDING them.
2 scapes of mine have failed due to diatoms. This has to be the reason. Theres not another algae out there that gives me problems or ever even crops up.
So I should look to spend around $200 so I don't buy a POS?
I think you should try to use a lower source of lighting before you invest in such a spendy unit. I had my 150 watt MH over a 29 gallon and my plants were brown through and through. I had recently switched over to a 96 watt compact and my diatom has disappeared. My plants have been recovering for about 2 weeks now and have grown bright green and red shoots lately. They are growing a lot slower compared to the MH but they aren't covered in algae.
This is what I have found to solve my problem, I just want to pass it along.