Plants seem to be dying, need some advice

htram

Junior Poster
Aug 28, 2010
10
0
1
I'm new to all this and have recently setup an old 90 gallon tank with the following:

2x 54w 12000 & 2x 54w 6500 (Don't have the 6500's yet so I'm running the 2x 12000s for 4-5 hours a day)
90 gallon (48x18x24) tank
Play Sand Substrate
Plants: HC, Dwarf Hair Grass + some random stuff I put in to fill it up
Co2 = Milwaukee Regulator + your reactor (Don't have the co2 regulator yet, so running no co2)
Filter = Aqua Clear 110 hang over filter
Fertz = EI method

My question/problem is that I see most of my plants are dying right now (the hairgrass and hc look okay but most of the other plants look like they are withering, i think they are harder to grow perhaps?). I'm not sure if it's my substrate (play sand and nothing else) or the fact that I don't have my 2x 54w 6500s yet and I don't have co2 setup yet. I'm about >< this close to removing the play sand and putting in a Flourite or Eco Complete substrate. Wanted some advice before I spent the extra cash..

Any help/advice would be greatly appreciated.

Thanks!
 

dutchy

Plant Guru Team
Lifetime Member
Jul 6, 2009
2,280
4
36
61
The Netherlands
Hi,

Plain sand is inert, but good water column dosing should provide enough nutrition for your plants. The only thin I can see so far is that you or not using CO2 but using 4 tubes, at least for a long period. I would use no more than 2 tubes, even when using CO2. As long as your CO2 is not working, don't use a light period longer than 8 to 10 hours and use some alternative C-source, like Excel or Easycarbo.

regards,
dutchy.
 

fjf888

Guru Class Expert
Oct 29, 2007
294
0
16
Northern Virginia
Your plants are starving

htram;54801 said:
I'm new to all this and have recently setup an old 90 gallon tank with the following:

2x 54w 12000 & 2x 54w 6500 (Don't have the 6500's yet so I'm running the 2x 12000s for 4-5 hours a day)
90 gallon (48x18x24) tank
Play Sand Substrate
Plants: HC, Dwarf Hair Grass + some random stuff I put in to fill it up
Co2 = Milwaukee Regulator + your reactor (Don't have the co2 regulator yet, so running no co2)
Filter = Aqua Clear 110 hang over filter
Fertz = EI method

My question/problem is that I see most of my plants are dying right now (the hairgrass and hc look okay but most of the other plants look like they are withering, i think they are harder to grow perhaps?). I'm not sure if it's my substrate (play sand and nothing else) or the fact that I don't have my 2x 54w 6500s yet and I don't have co2 setup yet. I'm about >< this close to removing the play sand and putting in a Flourite or Eco Complete substrate. Wanted some advice before I spent the extra cash..

Any help/advice would be greatly appreciated.

Thanks!

You are running extremely high light. Standard WPG is meaningless with t5 HO lights. With that much light your plants have a huge appetite for CO2 and everything else that they need. Save your money. In your current setup you would have the same results with ECO or Flourite as they are largely inert anyway

There's nothing wrong with playsand as a substrate, you need to dose the water column and add Excel or an another liquid carbon product and dose the water column perhaps at 1/3 recommended EI dosing until you have CO2 up and running. You could supplement with osmocote as well per instructions on the site using the ice cube method which would help as well.

You need CO2 of some type in there ASAP. Good luck
 

htram

Junior Poster
Aug 28, 2010
10
0
1
dutchy;54809 said:
Hi,

Plain sand is inert, but good water column dosing should provide enough nutrition for your plants. The only thin I can see so far is that you or not using CO2 but using 4 tubes, at least for a long period. I would use no more than 2 tubes, even when using CO2. As long as your CO2 is not working, don't use a light period longer than 8 to 10 hours and use some alternative C-source, like Excel or Easycarbo.

regards,
dutchy.

Thanks dutchy,

I recently removed the sand substrate and put in 7 bags of eco-complete. Got my co2 up and running and am continuing to dose with the EI method--

My schedule is something like this:

Sunday - 1/4 tsp trace
Monday - 1 tsp KN03, 1/4 tsp KH2P04
Tuesday - 1/4 tsp trace
Wednesday - 1 tsp KN03, 1/4 tsp KH2P04
Thursday - 1/4 tsp trace
Friday - Nothing
Saturday - Prune, Clean, 50% water change and 1 tsp KN03, 1/4 tsp KH2P04

Just adjusted my co2 today and it looks like I'm getting some decent pearling. However my HC and dwarf hairgrass are now browning at the tips and the leaves of some of my stem plants have either brown spots on them or are somewhat translucent..

Thanks!
 

scottward

Guru Class Expert
Oct 26, 2007
958
10
18
Brisbane, Australia
Brown spots on stem plants are a sure sign of CO2 deficiency. Since you have just adjusted your CO2 today, give things a week or two, the plants take time to adjust to the CO2 level. Pre-existing growth won't get any better (i.e. brown spots on existing growth won't go away). You will need to examine the new growth in a week or two - how does it look?
 

htram

Junior Poster
Aug 28, 2010
10
0
1
scottward;55469 said:
Brown spots on stem plants are a sure sign of CO2 deficiency. Since you have just adjusted your CO2 today, give things a week or two, the plants take time to adjust to the CO2 level. Pre-existing growth won't get any better (i.e. brown spots on existing growth won't go away). You will need to examine the new growth in a week or two - how does it look?

Thanks, I will keep an eye on it. Another question, I measured my nitrate levels today and saw that they were at about 40ppm.. bad?
 

Whiskey

Member
Jun 14, 2010
368
1
16
41
San Diego, CA
No,.. I think that's okay - but keep in mind that your plants are in shock right now so they are probably not consuming too much in the way of ferts. Give them some time to recover, and you will probably find that NO3 level goes down as the plants start to soak it up.

Whiskey
 

htram

Junior Poster
Aug 28, 2010
10
0
1
Whiskey;55472 said:
No,.. I think that's okay - but keep in mind that your plants are in shock right now so they are probably not consuming too much in the way of ferts. Give them some time to recover, and you will probably find that NO3 level goes down as the plants start to soak it up.

Whiskey

Good deal. I changed 50% water again too and ill keep an eye on what happens. thanks everyone!
 

htram

Junior Poster
Aug 28, 2010
10
0
1
So I think I might have algae on my rocks now too..

awayv.jpg


Any idea what kind that is + how to get rid of it?

Measured my parameters today again and got:

PH 6.6-6.8 (After 10 hours of co2)
Nitrate 0
Nitrite 0