Calcium deficiency vs Septoria? Or something else?

[joebe1]

<div class="bbWrapper">I first noticed the discoloration in the leaves yesterday but left it and it's gotten worse over night. After some research into what it may be I thought the two candidates that look most similar are Septoria or Calcium deficiency, but I'm very new to indoor growing and would love a second opinion. Any ideas are greatly appreciated!<br /> <br /> The strain is Cherry Grapefruit and It's only in the first week of growth. The humidity ranges from about 70-80% and temp ranges between 21-27 celcius. <br /> <br /> As its still very early I haven't added any nutrients, could this be the issue?</div>

 

[emanresu]

<div class="bbWrapper">calcium deficiency may be the issue, depending on what soil you planted them in it's not leaf septoria for sure.</div>

 

[Gmix]

<div class="bbWrapper">What medium are you using <br /> Have you feed them anything <br /> How close is the light , what wattage is it &amp; is it dimmed</div>

 

[Kamisama]

<div class="bbWrapper">Do u have correct PH?</div>

 

[joebe1]

<div class="bbWrapper"><blockquote data-attributes="member: 127592" data-quote="Gmix" data-source="post: 3106962" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=3106962" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-3106962">Gmix said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> What medium are you using<br /> Have you feed them anything<br /> How close is the light , what wattage is it &amp; is it dimmed </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Im just using organic potting soil mixed with some perlite.<br /> I haven't fed them anything yet, but I've got some CalMag arriving tomorrow as I'm thinking this could be the issue?<br /> <br /> The light is 600W set at about 50% brightness and its about 30-40cm away from the plants</div>

 

[joebe1]

<div class="bbWrapper"><blockquote data-attributes="member: 148004" data-quote="Kamisama" data-source="post: 3106990" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=3106990" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-3106990">Kamisama said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Do u have correct PH? </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>PH is 7</div>

 

[Gmix]

<div class="bbWrapper"><blockquote data-attributes="member: 152043" data-quote="joebe1" data-source="post: 3106997" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=3106997" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-3106997">joebe1 said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Im just using organic potting soil mixed with some perlite.<br /> I haven't fed them anything yet, but I've got some CalMag arriving tomorrow as I'm thinking this could be the issue?<br /> <br /> The light is 600W set at about 50% brightness and its about 30-40cm away from the plants </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>Ah right<br /> The lights to close<br /> Raise it to around 25-36”<br /> <br /> Don’t add cali mg or food your plants to young and doesn’t need it not in soil<br /> <br /> Btw you don’t need to ph organic grows that’s the one benefit I love about organics as I loathe measuring out stuff</div>

 

[Oldchucky]

<div class="bbWrapper">Is that 600 Tru watts pulled from the wall or 600 claimed watts from a misleading manufacturer? A true, 600 W pulled from the wall light is an expensive piece of an equipment! Probably about a buck a watt! There is a big difference between the two! So be careful!</div>

 

[joebe1]

<div class="bbWrapper"><blockquote data-attributes="member: 130937" data-quote="Oldchucky" data-source="post: 3107172" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=3107172" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-3107172">Oldchucky said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Is that 600 Tru watts pulled from the wall or 600 claimed watts from a misleading manufacturer? </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote>I have no clue, probably the latter tbh.<br /> <br /> This is the product on amazon:<br /> <div> <a href="https://www.amazon.co.uk/dp/B093BLNT14?tag=thcfarmer-21" class="link link--external" target="_blank" rel="nofollow ugc noopener" data-proxy-href="/proxy.php?link=https%3A%2F%2Fwww.amazon.co.uk%2Fdp%2FB093BLNT14%3Ftag%3Dthcfarmer-21&amp;hash=e205d1d02e13563e8101856db270e058"> Amazon.co.uk </a> </div></div>

 

[joebe1]

<div class="bbWrapper"><blockquote data-attributes="member: 127592" data-quote="Gmix" data-source="post: 3107011" class="bbCodeBlock bbCodeBlock--expandable bbCodeBlock--quote js-expandWatch"> <div class="bbCodeBlock-title"> <a href="/goto/post?id=3107011" class="bbCodeBlock-sourceJump" rel="nofollow" data-xf-click="attribution" data-content-selector="#post-3107011">Gmix said:</a> </div> <div class="bbCodeBlock-content"> <div class="bbCodeBlock-expandContent js-expandContent "> Ah right<br /> The lights to close<br /> Raise it to around 25-36”<br /> <br /> Don’t add cali mg or food your plants to young and doesn’t need it not in soil<br /> <br /> Btw you don’t need to ph organic grows that’s the one benefit I love about organics as I loathe measuring out stuff </div> <div class="bbCodeBlock-expandLink js-expandLink"><a role="button" tabindex="0">Click to expand...</a></div> </div> </blockquote><br /> Thanks for the advice, I've moved the lights further away but clearly some damage has already been done.<br /> <br /> Hopefully still recoverable from here :)<br /> <br /> <div class="bbImageWrapper js-lbImage" title="IMG 5247" data-src="https://www.thcfarmer.com/attachments/img_5247-jpg.2157451/" data-lb-sidebar-href="/media/img_5247-jpg.696053/?lightbox=1" data-lb-caption-extra-html="&nbsp;&middot; &lt;a href=&quot;/media/img_5247-jpg.696053/&quot;&gt;&lt;i class=&quot;fa--xf far fa-camera&quot; aria-hidden=&quot;true&quot;&gt;&lt;/i&gt; View media item&lt;/a&gt;" data-single-image="1"> <img src="https://www.thcfarmer.com/attachments/img_5247-jpg.2157451/" data-url="" class="bbImage" data-zoom-target="1" style="" alt="IMG 5247" title="IMG 5247" width="900" height="1200" loading="lazy" /> </div></div>

 

[Oldchucky]

<div class="bbWrapper">65 watts from the wall! Make sure people know this when you ask for advice! Should work for seedlings though! I just hate seeing people thinking they are getting a deal when they are getting conned! You’ll do all right!</div>